fsockopen

(PHP 4, PHP 5)

fsockopenOpen Internet or Unix domain socket connection

설명

resource fsockopen ( string $hostname [, int $port = -1 [, int &$errno [, string &$errstr [, float $timeout = ini_get("default_socket_timeout") ]]]] )

Initiates a socket connection to the resource specified by hostname.

PHP supports targets in the Internet and Unix domains as described in 지원되는 소켓 전송 목록. A list of supported transports can also be retrieved using stream_get_transports().

The socket will by default be opened in blocking mode. You can switch it to non-blocking mode by using stream_set_blocking().

The function stream_socket_client() is similar but provides a richer set of options, including non-blocking connection and the ability to provide a stream context.

인수

hostname

If OpenSSL support is installed, you may prefix the hostname with either ssl:// or tls:// to use an SSL or TLS client connection over TCP/IP to connect to the remote host.

port

The port number.

errno

If provided, holds the system level error number that occurred in the system-level connect() call.

If the value returned in errno is 0 and the function returned FALSE, it is an indication that the error occurred before the connect() call. This is most likely due to a problem initializing the socket.

errstr

The error message as a string.

timeout

The connection timeout, in seconds.

Note:

If you need to set a timeout for reading/writing data over the socket, use stream_set_timeout(), as the timeout parameter to fsockopen() only applies while connecting the socket.

반환값

fsockopen() returns a file pointer which may be used together with the other file functions (such as fgets(), fgetss(), fwrite(), fclose(), and feof()). If the call fails, it will return FALSE

오류/예외

Throws E_WARNING if hostname is not a valid domain.

변경점

버전 설명
4.3.0 Added support for the timeout parameter on win32.
4.3.0 SSL and TLS over TCP/IP support was added.

예제

Example #1 fsockopen() Example

<?php
$fp 
fsockopen("www.example.com"80$errno$errstr30);
if (!
$fp) {
    echo 
"$errstr ($errno)<br />\n";
} else {
    
$out "GET / HTTP/1.1\r\n";
    
$out .= "Host: www.example.com\r\n";
    
$out .= "Connection: Close\r\n\r\n";
    
fwrite($fp$out);
    while (!
feof($fp)) {
        echo 
fgets($fp128);
    }
    
fclose($fp);
}
?>

Example #2 Using UDP connection

The example below shows how to retrieve the day and time from the UDP service "daytime" (port 13) in your own machine.

<?php
$fp 
fsockopen("udp://127.0.0.1"13$errno$errstr);
if (!
$fp) {
    echo 
"ERROR: $errno - $errstr<br />\n";
} else {
    
fwrite($fp"\n");
    echo 
fread($fp26);
    
fclose($fp);
}
?>

주의

Note:

Depending on the environment, the Unix domain or the optional connect timeout may not be available.

Warning

UDP sockets will sometimes appear to have opened without an error, even if the remote host is unreachable. The error will only become apparent when you read or write data to/from the socket. The reason for this is because UDP is a "connectionless" protocol, which means that the operating system does not try to establish a link for the socket until it actually needs to send or receive data.

Note: 숫자로 이루어진 IPv6 주소(예. fe80::1)를 지정할 때는 IP를 대괄호로 감싸야 합니다. 예를 들면, tcp://[fe80::1]:80.

참고

add a note add a note

User Contributed Notes 64 notes

up
3
Alexander Wegener
6 years ago
To check if a Url is Online (with http and https)
Using @fgets to hide Warning when using SSL
(Bug: "Warning: function.fgets SSL: fatal protocol error", http://bugs.php.net/bug.php?id=23220)

<?php

   
function isOnline($url) {
        if (!
$url_info = parse_url($url)) {
            return
false;   
        }
       
        switch (
$url_info['scheme']) {
            case
'https':
               
$scheme = 'ssl://';
               
$port = 443;
                break;
            case
'http':
            default:
               
$scheme = '';
               
$port = 80;   
        }
       
       
$data = "";
       
$fid = @fsockopen($scheme . $url_info['host'], $port, $errno, $errstr, 30);
        if (
$fid) {
           
fputs($fid, 'HEAD ' . (isset($url_info['path'])? $url_info['path']: '/') . (isset($url_info['query'])? '?' . $url_info['query']: '') . " HTTP/1.0\r\n" .
                       
"Connection: close\r\n" .
                       
'Host: ' . $url_info['host'] . "\r\n\r\n");   
            while (!
feof($fid)) {
               
$data .= @fgets($fid, 128);
            }
           
fclose($fid);
            return !empty(
$data);
        } else {
            return
false;
        }
    }

?>
up
3
brage (a t) jeffnappi (d.o.t) commie
10 years ago
thought you guys may appreciate this function, allows you to pass an array of urls to download and does so simultaneously using non-blocking sockets, then returns the data in an array.

<?php
// function connects to an array of URLS at the same time
// and returns an array of results.

function multiHTTP ($urlArr) {
 
$sockets = Array(); // socket array!
 
$urlInfo = Array(); // info arr
 
$retDone = Array();
 
$retData = Array();
 
$errno   = Array();
 
$errstr  = Array();
 for (
$x=0;$x<count($urlArr);$x++) {
 
$urlInfo[$x] = parse_url($urlArr[$x]);
 
$urlInfo[$x][port] = ($urlInfo[$x][port]) ? $urlInfo[$x][port] : 80;
 
$urlInfo[$x][path] = ($urlInfo[$x][path]) ? $urlInfo[$x][path] : "/";
 
$sockets[$x] = fsockopen($urlInfo[$x][host], $urlInfo[$x][port],
                          
$errno[$x], $errstr[$x], 30);
 
socket_set_blocking($sockets[$x],FALSE);
 
$query = ($urlInfo[$x][query]) ? "?" . $urlInfo[$x][query] : "";
 
fputs($sockets[$x],"GET " . $urlInfo[$x][path] . "$query HTTP/1.0\r\nHost: " .
       
$urlInfo[$x][host] . "\r\n\r\n");
 }
 
// ok read the data from each one
 
$done = false;
 while (!
$done) {
  for (
$x=0; $x < count($urlArr);$x++) {
   if (!
feof($sockets[$x])) {
    if (
$retData[$x]) {
    
$retData[$x] .= fgets($sockets[$x],128);
    } else {
    
$retData[$x] = fgets($sockets[$x],128);
    }
   } else {
   
$retDone[$x] = 1;
   }
  }
 
$done = (array_sum($retDone) == count($urlArr));
 }
 return
$retData;
}
?>
up
3
xbensemhoun at t-systems dot fr
10 years ago
To make a telnet connection with a Cisco router:

<?php
$cfgServer
= "nnn.nnn.nnn.nnn"//IP of your router
$cfgPort    = 23;                //port, 22 if SSH
$cfgTimeOut = 10;

$usenet = fsockopen($cfgServer, $cfgPort, $errno, $errstr, $cfgTimeOut);

if(!
$usenet)
        {
        echo
"Connexion failed\n";
        exit();
        }
else
        {
        echo
"Connected\n<BR>";
       
fputs ($usenet, "toto\r\n");
       
fputs ($usenet, "en\r\n");
       
fputs ($usenet, "tutu\r\n");
       
fputs ($usenet, "exit\r\n");
        while (!
feof($usenet))
                {
                echo
". ".fgets($usenet, 128)."<BR>\n";
                }
        }
?>

Then you will have:
Connected
. ��������
.
. User Access Verification
.
. Password:
. testXB>en
. Password:
. testXB#exit
.
up
4
nytro_rst at yahoo dot com
4 years ago
A simple proxy list checker. You can check a list ip:port if that port is opened on that IP.

<?php

$fisier
= file_get_contents('proxy_list.txt'); // Read the file with the proxy list
$linii = explode("\n", $fisier); // Get each proxy
$fisier = fopen("bune.txt", "a"); // Here we will write the good ones

for($i = 0; $i < count($linii) - 1; $i++) test($linii[$i]); // Test each proxy

function test($proxy)
{
  global
$fisier;
 
$splited = explode(':',$proxy); // Separate IP and port
 
if($con = @fsockopen($splited[0], $splited[1], $eroare, $eroare_str, 3))
  {
   
fwrite($fisier, $proxy . "\n"); // Check if we can connect to that IP and port
   
print $proxy . '<br>'; // Show the proxy
   
fclose($con); // Close the socket handle
 
}
}

fclose($fisier); // Close the file

?>
up
4
Jeremy Saintot
3 years ago
Here is my fsockopen-based HTTP request fonction (GET and POST) :

<?php
function http_request(
   
$verb = 'GET',             /* HTTP Request Method (GET and POST supported) */
   
$ip,                       /* Target IP/Hostname */
   
$port = 80,                /* Target TCP port */
   
$uri = '/',                /* Target URI */
   
$getdata = array(),        /* HTTP GET Data ie. array('var1' => 'val1', 'var2' => 'val2') */
   
$postdata = array(),       /* HTTP POST Data ie. array('var1' => 'val1', 'var2' => 'val2') */
   
$cookie = array(),         /* HTTP Cookie Data ie. array('var1' => 'val1', 'var2' => 'val2') */
   
$custom_headers = array(), /* Custom HTTP headers ie. array('Referer: http://localhost/ */
   
$timeout = 1,           /* Socket timeout in seconds */
   
$req_hdr = false,          /* Include HTTP request headers */
   
$res_hdr = false           /* Include HTTP response headers */
   
)
{
   
$ret = '';
   
$verb = strtoupper($verb);
   
$cookie_str = '';
   
$getdata_str = count($getdata) ? '?' : '';
   
$postdata_str = '';

    foreach (
$getdata as $k => $v)
               
$getdata_str .= urlencode($k) .'='. urlencode($v) . '&';

    foreach (
$postdata as $k => $v)
       
$postdata_str .= urlencode($k) .'='. urlencode($v) .'&';

    foreach (
$cookie as $k => $v)
       
$cookie_str .= urlencode($k) .'='. urlencode($v) .'; ';

   
$crlf = "\r\n";
   
$req = $verb .' '. $uri . $getdata_str .' HTTP/1.1' . $crlf;
   
$req .= 'Host: '. $ip . $crlf;
   
$req .= 'User-Agent: Mozilla/5.0 Firefox/3.6.12' . $crlf;
   
$req .= 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' . $crlf;
   
$req .= 'Accept-Language: en-us,en;q=0.5' . $crlf;
   
$req .= 'Accept-Encoding: deflate' . $crlf;
   
$req .= 'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7' . $crlf;
   
    foreach (
$custom_headers as $k => $v)
       
$req .= $k .': '. $v . $crlf;
       
    if (!empty(
$cookie_str))
       
$req .= 'Cookie: '. substr($cookie_str, 0, -2) . $crlf;
       
    if (
$verb == 'POST' && !empty($postdata_str))
    {
       
$postdata_str = substr($postdata_str, 0, -1);
       
$req .= 'Content-Type: application/x-www-form-urlencoded' . $crlf;
       
$req .= 'Content-Length: '. strlen($postdata_str) . $crlf . $crlf;
       
$req .= $postdata_str;
    }
    else
$req .= $crlf;
   
    if (
$req_hdr)
       
$ret .= $req;
   
    if ((
$fp = @fsockopen($ip, $port, $errno, $errstr)) == false)
        return
"Error $errno: $errstr\n";
   
   
stream_set_timeout($fp, 0, $timeout * 1000);
   
   
fputs($fp, $req);
    while (
$line = fgets($fp)) $ret .= $line;
   
fclose($fp);
   
    if (!
$res_hdr)
       
$ret = substr($ret, strpos($ret, "\r\n\r\n") + 4);
   
    return
$ret;
}
?>

Example usages :

<?php
echo http_request('GET', 'www.php.net');
echo
http_request('GET', 'www.php.net', 80, '/manual/en/function.phpinfo.php');
echo
http_request('GET', 'www.php.net', 80, '/manual/en/function.phpinfo.php', array('get1' => 'v_get1'), array(), array('cookie1' => 'v_cookie1'), array('X-My-Header' => 'My Value'));
?>

[EDIT BY danbrown AT php DOT net: Contains a bugfix provided by "Wrinkled Cheese" on 24-JUN-2011 to fix the $getdata foreach() loop; another bugfix provided by Suat Secmen on 12-JAN-2012 to fix a $timeout = 1000, then stream_set_timeout($fp, 0, $timeout * 1000), equaling 1,000 seconds.]
up
3
anarchy
6 years ago
The DEFAULT stream timeout is set according to default_socket_timeout in your php.ini file.  Took forever for me to dig that up....
up
2
robin at pozytron dot com
8 years ago
I have found, when using fsockopen() and the POST method, that using HTTP/1.1 is VERY significantly slower than HTTP/1.0 (at least for the server I'm querying, an Orion-based server). Also, using cURL tended to be faster than fsockopen(), though only slightly. For example, here was a recent set of data (for the same exact request in each case):

cURL: 4.2sec
fsockopen() HTTP/1.0: 4.9sec
fsockopen() HTTP/1.1: 19.9sec (!)

I'm not sure why this was occurring. Perhaps it has something to do with the Orion server, which I have little experience with. However, it was not a fluke, and I double-checked the code to make sure there were no errors.

EDITORS NOTE: HTTP/1.1 uses persistent connection causing this delay. Use "Connection: close" header to disable it.
up
2
walter
4 years ago
For some reason the default FreeBSD 7.0 port (jailed environment) breaks fsockopen() on SSL URLs, returning a constant stream of nothing!  In my case this resulted in php-cgi bringing down lighttpd completely, in rapid time!  Avoid FreeBSD/jails/fsockopen + SSL.  Use curl_init() instead.
up
2
asalamanca at redcetus dot com
10 years ago
This is a very fast program for test a form or link (many times).
<?php
$repeat 
= 100// How many times repeat the test

$timeout = 100// Max time for stablish the conection
$size    = 16;   // Bytes will be read (and display). 0 for read all

$server  = '127.0.0.1';            // IP address
$host    = 'www.example.net';             // Domain name
$target  = '/poll/answer.asp';        // Specific program
$referer = 'http://www.example.com/';    // Referer
$port    = 80;

// Setup an array of fields to get with then create the get string
$gets = array ( 'get_field_1' => 'somevalue',
               
'get_field_2' => 'somevalue' );

// Setup an array of fields to post with then create the post string
$posts = array ( 'post_field_1' => 'somevalue',
                
'post_field_2' => 'somevalue' );

// That's all. Now the program proccess $repeat times

$method = "GET";
if (
is_array( $gets ) ) {
   
$getValues = '?';
    foreach(
$gets AS $name => $value ){
       
$getValues .= urlencode( $name ) . "=" . urlencode( $value ) . '&';
    }
   
$getValues = substr( $getValues, 0, -1 );
} else {
   
$getValues = '';
}

if (
is_array( $posts ) ) {
    foreach(
$posts AS $name => $value ){
       
$postValues .= urlencode( $name ) . "=" . urlencode( $value ) . '&';
    }
   
$postValues = substr( $postValues, 0, -1 );
   
$method = "POST";
} else {
   
$postValues = '';
}

$request  = "$method $target$getValues HTTP/1.1\r\n";
$request .= "Host: $host\r\n";
$request .= 'User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) ';
$request .= "Gecko/20021204\r\n";
$request .= 'Accept: text/xml,application/xml,application/xhtml+xml,';
$request .= 'text/html;q=0.9,text/plain;q=0.8,video/x-mng,image/png,';
$request .= "image/jpeg,image/gif;q=0.2,text/css,*/*;q=0.1\r\n";
$request .= "Accept-Language: en-us, en;q=0.50\r\n";
$request .= "Accept-Encoding: gzip, deflate, compress;q=0.9\r\n";
$request .= "Accept-Charset: ISO-8859-1, utf-8;q=0.66, *;q=0.66\r\n";
$request .= "Keep-Alive: 300\r\n";
$request .= "Connection: keep-alive\r\n";
$request .= "Referer: $referer\r\n";
$request .= "Cache-Control: max-age=0\r\n";

if (
$method == "POST" ) {
   
$lenght = strlen( $postValues );
   
$request .= "Content-Type: application/x-www-form-urlencoded\r\n";
   
$request .= "Content-Length: $lenght\r\n";
   
$request .= "\r\n";
   
$request .= $postValues;
}

for (
$i = 0; $i < $repeat; $i++ ) {
   
$socket  = fsockopen( $server, $port, $errno, $errstr, $timeout );
   
fputs( $socket, $request );
    if (
$size > 0 ) {
       
$ret = fgets( $socket, $size );
    } else {
       
$ret = '';
        while ( !
feof( $socket ) ) {
           
$ret .= fgets( $socket, 4096 );
        }
    }
   
fclose( $socket );
    echo
"<hr> $i -- $content $ret";
}
?>

Alejandro Salamanca
up
1
lukas at MORESPAM dot jhu dot edu
9 years ago
Here's a function that I needed and couldn't use CURL... it helps you if you want to send the POST data (instead of GET) from one form to 2 or more other PHP scripts.  Trust me... it's a life saver!!

<?php
     
function HTTP_Post($URL,$data, $referrer="") {

       
// parsing the given URL
       
$URL_Info=parse_url($URL);

       
// Building referrer
       
if($referrer=="") // if not given use this script as referrer
         
$referrer=$_SERVER["SCRIPT_URI"];

       
// making string from $data
       
foreach($data as $key=>$value)
         
$values[]="$key=".urlencode($value);
       
$data_string=implode("&",$values);

       
// Find out which port is needed - if not given use standard (=80)
       
if(!isset($URL_Info["port"]))
         
$URL_Info["port"]=80;

       
// building POST-request:
       
$request.="POST ".$URL_Info["path"]." HTTP/1.1\n";
       
$request.="Host: ".$URL_Info["host"]."\n";
       
$request.="Referer: $referer\n";
       
$request.="Content-type: application/x-www-form-urlencoded\n";
       
$request.="Content-length: ".strlen($data_string)."\n";
       
$request.="Connection: close\n";
       
$request.="\n";
       
$request.=$data_string."\n";

       
$fp = fsockopen($URL_Info["host"],$URL_Info["port"]);
       
fputs($fp, $request);
        while(!
feof($fp)) {
           
$result .= fgets($fp, 128);
        }
       
fclose($fp);

        return
$result;
      }

     
$output1=HTTP_Post("http://www.example.com/script1.php",$_POST);
     
$output2=HTTP_Post("http://www.example.net/script2.php",$_POST);
?>
up
2
ghzero at ghzero dot de
4 years ago
note:
the default protocol - if not given - seems to be tcp://
up
2
laisebrown at gmail dot com
5 years ago
When you're connecting through a proxy server you can't rely on fsockopen returning false to indicate that the connection has failed. (This also applies to fgets and fwrite.)

To check whether the proxy succeeded in contacting the real target host, you need to look for the http response code in the headers that get returned. Typically, if the proxy was unable to reach the host, you'll find a line containing something like:
HTTP/1.0 503 Service Unavailable
up
2
Anonymous
5 years ago
"system level connect()" is not further documented inside the php documentation so it is hard to find out more about error numbers.

someone suggest a more system-close way to find out more about error numbers here: http://www.askapache.com/php/fsockopen-socket.html (an interesting read about fsockopen anyway).

in my case i could debug to the fact that fsocketopen error number 16 was resulted in the inpossibility to resolve a hostname.
up
2
warezthebeef at gmail dot com
6 years ago
I ran into a problem where I needed to make an fsockopen() style connection from one specific ip address on a server with multiple ip aliases. Unfortunately fsockopen() does not allow the specification of a source address making it unsuitable. I could not find any other solutions elsewhere so here is mine for those with php 5.1.0 or greater.

<?php
// connect to the internet using the '192.168.0.100' IP
$opts = array('socket' => array('bindto' => '192.168.0.100:0'));

$context = stream_context_create($opts);

$fp = stream_socket_client("tcp://www.example.com:80", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, $context);
?>

Now $fp can be used like a resource handle returned by a vanilla fsockopen() call!
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2
ryan1_00 at hotmail dot com
7 years ago
This script checks specific ports so you need to have the correct port open on the server for this to work.

E.g if i have a windows domain controller and it is servering LDAP then the following would be used to check it is online:
<?php
chkServer
("MyDC", "389");
?>

for a webserver:
<?php
chkServer
("MyWebSvr", "80");
?>

etc etc
--------------------------------------------------------

<?php
// check if a server is up by connecting to a port
function chkServer($host, $port)
{  
   
$hostip = @gethostbyname($host); // resloves IP from Hostname returns hostname on failure
   
   
if ($hostip == $host) // if the IP is not resloved
   
{
        echo
"Server is down or does not exist";
    }
    else
    {
        if (!
$x = @fsockopen($hostip, $port, $errno, $errstr, 5)) // attempt to connect
       
{
            echo
"Server is down";
        }
        else
        {
            echo
"Server is up";
            if (
$x)
            {
                @
fclose($x); //close connection
           
}
        } 
    }
}
?>
up
1
jack at jtr dot de
10 years ago
Here is a function for testing a website/URI for availability:

<?php
   
/*
    * @return boolean
    * @param  string $link
    * @desc   berprft die angegeben URL auf Erreichbarkeit (HTTP-Code: 200)
    */
   
function url_validate( $link )
    {       
       
$url_parts = @parse_url( $link );

        if ( empty(
$url_parts["host"] ) ) return( false );

        if ( !empty(
$url_parts["path"] ) )
        {
           
$documentpath = $url_parts["path"];
        }
        else
        {
           
$documentpath = "/";
        }

        if ( !empty(
$url_parts["query"] ) )
        {
           
$documentpath .= "?" . $url_parts["query"];
        }

       
$host = $url_parts["host"];
       
$port = $url_parts["port"];
       
// Now (HTTP-)GET $documentpath at $host";

       
if (empty( $port ) ) $port = "80";
       
$socket = @fsockopen( $host, $port, $errno, $errstr, 30 );
        if (!
$socket)
        {
            return(
false);
        }
        else
        {
           
fwrite ($socket, "HEAD ".$documentpath." HTTP/1.0\r\nHost: $host\r\n\r\n");
           
$http_response = fgets( $socket, 22 );
           
            if (
ereg("200 OK", $http_response, $regs ) )
            {
                return(
true);
               
fclose( $socket );
            } else
            {
//                echo "HTTP-Response: $http_response<br>";
               
return(false);
            }
        }
    }
?>
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verran at descent-rangers dot com
11 years ago
I was tearing my hair out for a week trying to figure out how to do this.

If you use fsockopen with a service that doesn't have an EOF, or you try to read beyond EOF or line break, PHP can hang completely.

In my case, I was trying to write a class that talks to Kali servers (www.kali.net) to get a list of people on the chat server. To keep PHP from hanging due to the above, I discovered this:

<?php
   
class kali_utils {
        function
games_list($kali_server_ip, $kali_server_port) {
           
$result = array();
           
$fp = fsockopen($kali_server_ip, $kali_server_port, $errno, $error, 30);
            if (!
$fp) {
               
$result["errno"] = $errno;
               
$result["error"] = $error;
            }
            else {
               
fputs($fp, "KALIQ");
               
$header = fread($fp, 5);
               
$bytes_left = socket_get_status($fp);
                if (
$bytes_left > 0) {
                   
$result["results"] = fread($fp, $bytes_left["unread_bytes"]);
                }
                else {
                   
$result["results"] = "";
                }
               
fclose($fp);
            }
            return
$result;
        }
    }
?>

When I send the request packet, I get a response packet of length 5. Then I call socket_get_status() and use the unread_bytes key from it to know how far to fread from the socket. Works very good.

I've only used this on PHP 4.2.1 so far.
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biguenique at yahoo dot ca
1 month ago
Did you know that fsockopen() DOES NOT validate SSL certificates whatsoever? For the sake of World's overall security level, I guess it would be a very positive idea to add a BIG WARNING notice on the manual page!

Citing the extensive study  titled "The Most Dangerous Code in the World: Validating SSL Certificates in Non-Browser Software" published in 2012 (google it if they removed the link) on page 5:

"PHP provides several methods for establishing SSL connections. For example, fsockopen, which opens a raw socket to the remote server, can be used to connect to SSL servers by putting “ssl://” in the URL. Even though fsockopen does not perform any certificate checks whatsoever, PHP application developers routinely use it for SSL connection establishment (see Section 9)."

For proper certificate validation with some level of ease, you can always move to cURL, but be careful:

"PHP also provides a cURL binding, which uses cURL’s default settings to establish SSL connections with proper certificate validation. As we show in Sections 7.1, 7.2, and 7.3, application developers often set cURL options incorrectly, overriding the defaults and breaking certificate validation."

For more detailed insights, try out the following code:
<?php readfile("http".str_replace('+', '.', implode('/', array(":", null, "www+cs+utexas+edu", "~shmat", "shmat_ccs12.pdf")))); ?>
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Charles Torvalds
11 months ago
Rewrite/Update of king dot macro's DNS lookups function.
<?php

function gethostbyaddr_timeout( $ip, $dns, $timeout = 3 ) {
   
// src: http://www.askapache.com/php/php-fsockopen-dns-udp.html
   
    // random transaction number (for routers etc to get the reply back)
   
$data = rand( 10, 77 ) . "\1\0\0\1\0\0\0\0\0\0";
   
   
// octals in the array, keys are strlen of bit
   
$bitso = array("","\1","\2","\3" );
    foreach(
array_reverse( explode( '.', $ip ) ) as $bit ) {
       
$l=strlen($bit);
       
$data.="{$bitso[$l]}".$bit;
    }
   
   
// and the final bit of the request
   
$data .= "\7in-addr\4arpa\0\0\x0C\0\1";
       
   
// create UDP socket
   
$errno = $errstr = 0;
   
$fp = fsockopen( "udp://{$dns}", 53, $errno, $errstr, $timeout );
    if( !
$fp || ! is_resource( $fp ) )
        return
$errno;

    if(
function_exists( 'socket_set_timeout' ) ) {
       
socket_set_timeout( $fp, $timeout );
    } elseif (
function_exists( 'stream_set_timeout' ) ) {
       
stream_set_timeout( $fp, $timeout );
    }

   
// send our request (and store request size so we can cheat later)
   
$requestsize = fwrite( $fp, $data );
   
$max_rx = $requestsize * 3;
   
   
$start = time();
   
$responsesize = 0;
    while (
$rxed < $max_rx && ( ( time() - $start ) < $timeout ) && ($b = fread( $fp, 1 ) ) !== false ) {
       
$responsesize++;
       
$response .= $b;
    }
    echo
"[tx: $requestsize bytes]  [rx: {$responsesize} bytes]";

   
// hope we get a reply
   
if ( is_resource( $fp ) )
       
fclose( $fp );

   
// if empty response or bad response, return original ip
   
if ( empty( $response ) || bin2hex( substr( $response, $requestsize + 2, 2 ) ) != '000c' )
        return
$ip;
       
   
// set up our variables
   
$host = '';
   
$len = $loops = 0;
   
   
// set our pointer at the beginning of the hostname uses the request size from earlier rather than work it out
   
$pos = $requestsize + 12;
    do {
       
// get segment size
       
$len = unpack( 'c', substr( $response, $pos, 1 ) );
       
       
// null terminated string, so length 0 = finished - return the hostname, without the trailing .
       
if ( $len[1] == 0 )
            return
substr( $host, 0, -1 );
           
       
// add segment to our host
       
$host .= substr( $response, $pos + 1, $len[1] ) . '.';
       
       
// move pointer on to the next segment
       
$pos += $len[1] + 1;
       
       
// recursion protection
       
$loops++;
    }
    while (
$len[1] != 0 && $loops < 20 );
   
   
// return the ip in case
   
return $ip;
}

?>
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0
kexianbin at diyism dot com
2 years ago
My recursive unchunk function:

<?php
function unchunk($result)
         {return
preg_replace('/([0-9A-F]+)\r\n(.*)/sie',
                             
'($cnt=@base_convert("\1", 16, 10))
                               ?substr(($str=@strtr(\'\2\', array(\'\"\'=>\'"\', \'\\\\0\'=>"\x00"))), 0, $cnt).unchunk(substr($str, $cnt+2))
                               :""
                              '
,
                             
$result
                            
);
         }
?>
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gratcypalma at gmail dot com
3 years ago
<?php
/*
this script i used for remote my PvPGN Server, to check email user.
not good, but it work.
*/

set_time_limit(0);
$host   = 'host';
$port   = 'port';
$user   = 'user';
$pass   = 'pass';
$socket = fsockopen($host, $port) or die('Could not connect to: '.$host);
$userdota = "palma";
if(
$socket)
{
   
sendcmd("\r",$socket);
   
$status = "open"; // set status open
       
   
while($status=="open") //while we are connected to the server
     
{    
            
$line = @fgets($socket, 1024) ;
             
/////////////login////////////////   
           
if (strstr($line, "there is no guest account"))
              {
                
sendcmd($user."\r\n",$socket);
                
sendcmd($pass."\r\n",$socket);
              }   
           
//////////////send command ////////////////////
           
if (strstr($line,"Your unique name: ".$user))
              { 
sendcmd("/finger ".$userdota."\r\n",$socket);
              }
           
           
//////////////get email////////////////////
           
if (strstr($line,"email:")) // if respone server write "email:"
             

                
$pattern = '/email:(.*) ,/';
                
preg_match($pattern, $line, $matches);
                
fclose($socket);
                
$status="close"; // status close
                
$matches=str_replace(" ","", $matches);
                
$matches=str_replace(",is_operator:0,is_admin:0,","", $matches);
                
$matches=str_replace("email:","", $matches);
                 print
$matches[0];                
                
$email=$matches[0];
              }
            if (
strstr($line,"ERROR: Invalid user.")) // if respone server write "ERROR: Invalid user."
             

                
                
fclose($socket);
                
$status="close";
                
$error ="Invalid User";    // error message
             
}
           
           
////////////login failed //////////////////////////            
           
if (strstr($line, "Login failed")) // if respone server write "Login failed"
             
{
                
$error = "Login Failed";    // error message
                
fclose($socket);
                
$status="close";
              }
           
           
flush(); // close
     
     
}
         
}
function
sendcmd($cmd,$socket) // send command function
{
 
fputs($socket, $cmd, strlen($cmd));
}
?>
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ken at kenmclean dot com dot au
3 years ago
Make sure you don't use a double line break ("\r\n\r\n") during the middle of your header, as it appears to end the header.

This means a \r\n\r\n before "Connection: close\r\n\r\n" will not correctly tell fsockopen to close the request, leading to a max timeout error.

Some of the code on this page does this. It took me days to figure out. Example:

<?php
   
// Wrong:
   
fwrite($fp, "GET / HTTP/1.1\r\n");
   
fwrite($fp, "Host: php.net\r\n");
   
fwrite($fp, "User-Agent: example\r\n\r\n");
   
fwrite($fp, "Connection: Close\r\n\r\n");

   
// Right:
   
fwrite($fp, "GET / HTTP/1.1\r\n" );
   
fwrite($fp, "Host: php.net\r\n");
   
fwrite($fp, "User-Agent: example\r\n");
   
fwrite($fp, "Connection: Close\r\n\r\n");
?>
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SoupNazi
3 years ago
I would like to save people some time.  I spent a couple hours trying to de-hunkify the response from apache2.  I found out that if you simply make a 1.0 request vs. a 1.1 request you will get no hunks and so this simple script below will get the page you want in plain text, no hunks:

<?php
$data
=false;
$url='www.example.com';

$fp = @fsockopen($url, 80, $errno, $errstr, 1);
if (
$fp) {
   
stream_set_timeout($fp,1);         
   
$out = "GET / HTTP/1.0\r\n";
   
$out .= "Host: www.example.com\r\n";
   
$out .= "Connection: Close\r\n\r\n";
    if (
fwrite($fp, $out)) {
       
$content='';
       
$header = "not yet";
        while (!
feof($fp)) {
           
$data=true;
           
$line=fgets($fp,128);
            if (
$line=="\r\n" && $header=="not yet") {
               
$header = "passed";
            }
            if (
$header=="passed") {
               
$content.=$line;
            }
        }
       
fclose ($fp);
    }
}
if (!
$data) {
    print
"Unable to retrieve all or part of $url";
} else {
    print
"$content";
}

?>

I borrowed some of the script from another poster here - the portion removing the returned header.
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steve at visual77 dot com
4 years ago
A short, quick unchunk function that makes use of regular expressions:

<?php

function unchunk($result) {
    return
preg_replace_callback(
       
'/(?:(?:\r\n|\n)|^)([0-9A-F]+)(?:\r\n|\n){1,2}(.*?)'.
       
'((?:\r\n|\n)(?:[0-9A-F]+(?:\r\n|\n))|$)/si',
       
create_function(
           
'$matches',
           
'return hexdec($matches[1]) == strlen($matches[2]) ? $matches[2] : $matches[0];'
       
),
       
$result
   
);
}

?>
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FaTe
4 years ago
In all header aspects I can understand for 3rd party content you may not be able to apply the following but for those reading pages where content being read by fsockopen is editable then I suggest adding a simple unique tag to the beginning of any page being read such as ":THISTAG:"

Cleaning the header contents becomes simplier when you can then use a method like split to grab your data like:

list($header,$data) = explode(":THISTAG:",$data);
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oliver dot christen at camptocamp dot com
4 years ago
When downloading large files, it is not really efficient to put the whole server answer in memory before parsing the data to remove the header parts. Here is a simple way to do it while writing the data as it arrive:

<?php

// $socket is a valid fsockopen handle

$out = '';
$headerendfound = false;
$fp = fopen($fileTarget, 'w');
$buffer = '';
while (!
feof($socket)) {
   
$out = fgets ($socket,16384);
    if (
$headerendfound) {
       
fwrite($fp, $out);
        print
'.';
    }
    if (!
$headerendfound) {
       
$buffer .= $out;
        print
"searching for header\n";
       
$headerend = strpos($buffer, "\r\n\r\n");
        if (
$headerend !== false) {
           
$headerendfound = true;
           
fwrite($fp, substr($buffer, $headerend+4));
           
$buffer = '';
        }
    }
}
fclose($fp);
fclose($socket);

?>
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Hyan Christian
5 years ago
To just take the HTTP content from fsockopen, better wait until feof finish to read the \r\n separator

<?php
//fsockopen, fputs..

$content = "";
$header = "not yet";

while( !
feof( $pointer ) ) {
   
$line = fgets( $pointer, 128 );
    if(
$line == "\r\n" && $header == "not yet" ) {
       
$header = "passed";
    }
    if(
$header == "passed" ) {
       
$content .= $line;
    }
}

//fclose..

echo( substr( $content, 2 ) );
?>
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Doug
5 years ago
[NOTE BY danbrown AT php DOT net: Updated version.  Contains author-submitted bug fixes.]

Here is a way to get an array of cities / states for any zip code anywhere in the US.  This example uses a $_GET variable to specify which zip code, but you can get it from any source you wish.  This will return actual and acceptable zip code cities (according to USPS), but can be easily modified to include just the actual city.

<?php

if($_GET['zip'])
{
    if(!(
$fp = fsockopen('zip4.usps.com', 80, $errno, $errstr)))
        echo
'Could not connect to USPS! Error number: ' . $errno . '(' . $errstr . ')';

    else
    {
       
$poststring =

           
"GET /zip4/zcl_3_results.jsp?zip5=" . $_GET['zip'] . " HTTP/1.0\r\n" .
           
"Connection: close\r\n\r\n";

       
fputs($fp, $poststring);

       
$buffer = '';

        while(!
feof($fp))
           
$buffer .= fgets($fp, 128);

       
fclose($fp);

       
preg_match('/Actual City name(.*)/s', $buffer, $match);

       
$temp = explode('Not Acceptable', $match[1]);

       
// Capture city/state combination for all valid cities

       
preg_match_all('/headers="pre">(?:<b>)?([\w|\s]+), (\w+)/', $temp[0], $acceptable, PREG_SET_ORDER);

       
$values = array();

        foreach(
$acceptable as $value)

           
$values[] =

                array
                (
                   
'city' => $value[1],
                   
'state' => $value[2]
                );

        if(
count($values) == 0)
            echo
'Zip could not be found in the database!';
    }
}
else
    echo
'Please specify a zip!';

?>
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andrew at enigma-pro dot com
5 years ago
Notice using "tcp" insted of "http"
<?php
fsockopen
("tcp://example.net",80 , $errno, $errstr, 30);
?>
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0
mikey at badpenguins dot com
5 years ago
My $0.02 on handling chunked transfer encoded output...  Has rudimentary error handling.

<?php
//
// Example usage...
//
$server  = '127.0.0.1';
$port    = '80';
$uri     = '/cgi-bin/random-cgi';
$content = 'Your post content...';

$post_results = httpPost($server,$port,$uri,$content);
if (!
is_string($post_results)) {
    die(
'uh oh, something went wrong');
    } else {
    die(
'Here are your results: ' . $post_results);
    }

//
// Post provided content to an http server and optionally
// convert chunk encoded results.  Returns false on errors,
// result of post on success.  This example only handles http,
// not https.
//
function httpPost($ip=null,$port=80,$uri=null,$content=null) {
    if (empty(
$ip))         { return false; }
    if (!
is_numeric($port)) { return false; }
    if (empty(
$uri))        { return false; }
    if (empty(
$content))    { return false; }
   
// generate headers in array.
   
$t   = array();
   
$t[] = 'POST ' . $uri . ' HTTP/1.1';
   
$t[] = 'Content-Type: text/html';
   
$t[] = 'Host: ' . $ip . ':' . $port;
   
$t[] = 'Content-Length: ' . strlen($content);
   
$t[] = 'Connection: close';
   
$t   = implode("\r\n",$t) . "\r\n\r\n" . $content;
   
//
    // Open socket, provide error report vars and timeout of 10
    // seconds.
    //
   
$fp  = @fsockopen($ip,$port,$errno,$errstr,10);
   
// If we don't have a stream resource, abort.
   
if (!(get_resource_type($fp) == 'stream')) { return false; }
   
//
    // Send headers and content.
    //
   
if (!fwrite($fp,$t)) {
       
fclose($fp);
        return
false;
        }
   
//
    // Read all of response into $rsp and close the socket.
    //
   
$rsp = '';
    while(!
feof($fp)) { $rsp .= fgets($fp,8192); }
   
fclose($fp);
   
//
    // Call parseHttpResponse() to return the results.
    //
   
return parseHttpResponse($rsp);
    }

//
// Accepts provided http content, checks for a valid http response,
// unchunks if needed, returns http content without headers on
// success, false on any errors.
//
function parseHttpResponse($content=null) {
    if (empty(
$content)) { return false; }
   
// split into array, headers and content.
   
$hunks = explode("\r\n\r\n",trim($content));
    if (!
is_array($hunks) or count($hunks) < 2) {
        return
false;
        }
   
$header  = $hunks[count($hunks) - 2];
   
$body    = $hunks[count($hunks) - 1];
   
$headers = explode("\n",$header);
    unset(
$hunks);
    unset(
$header);
    if (!
verifyHttpResponse($headers)) { return false; }
    if (
in_array('Transfer-Encoding: chunked',$headers)) {
        return
trim(unchunkHttpResponse($body));
        } else {
        return
trim($body);
        }
    }

//
// Validate http responses by checking header.  Expects array of
// headers as argument.  Returns boolean.
//
function validateHttpResponse($headers=null) {
    if (!
is_array($headers) or count($headers) < 1) { return false; }
    switch(
trim(strtolower($headers[0]))) {
        case
'http/1.0 100 ok':
        case
'http/1.0 200 ok':
        case
'http/1.1 100 ok':
        case
'http/1.1 200 ok':
            return
true;
        break;
        }
    return
false;
    }

//
// Unchunk http content.  Returns unchunked content on success,
// false on any errors...  Borrows from code posted above by
// jbr at ya-right dot com.
//
function unchunkHttpResponse($str=null) {
    if (!
is_string($str) or strlen($str) < 1) { return false; }
   
$eol = "\r\n";
   
$add = strlen($eol);
   
$tmp = $str;
   
$str = '';
    do {
       
$tmp = ltrim($tmp);
       
$pos = strpos($tmp, $eol);
        if (
$pos === false) { return false; }
       
$len = hexdec(substr($tmp,0,$pos));
        if (!
is_numeric($len) or $len < 0) { return false; }
       
$str .= substr($tmp, ($pos + $add), $len);
       
$tmp  = substr($tmp, ($len + $pos + $add));
       
$check = trim($tmp);
        } while(!empty(
$check));
    unset(
$tmp);
    return
$str;
    }

?>
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admin at lab-9 dot com
5 years ago
When you try to POST/GET requests via HTTPS over SSL/TLS you should notice this:

<?php
// preconditions
$port = 80 | 443
$host
= "www.example.com";
$method = "POST" | "GET";
$contenttype = "text/html" | "text/plain" | "text/xml" | ...;
$data = "<something>";

// script
if($port == 443)
     
$sslhost = "ssl://".$host;
else
     
$sslhost = $host;
$fp = fsockopen($sslhost, $port);
fputs($fp, "$method $path HTTP/1.1\r\n");
fputs($fp, "Host: $host\r\n");
fputs($fp, "Content-type: $contenttype\r\n");
fputs($fp, "Content-length: ".strlen($data)."\r\n");
fputs($fp, "Connection: close\r\n");
fputs($fp, "\r\n");
?>

The server usually does not understand the HTTP-header "Host: XXX" if you provide it with the trailing "ssl://" used by fsockopen(); If you do it anyway you probably get a HTTP 400 back as response. :-)
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jabeba at web dot de
6 years ago
If you have to use a proxy to make requests outside of your local network, you may use this class:

<?php
/*
 *
 * No Proxy Authentification Implemented; PHP 5
 *
 */

class RemoteFopenViaProxy {

    private
$result;
    private
$proxy_name;
    private
$proxy_port;
    private
$request_url;

    public function
get_proxy_name() {
        return
$this->proxy_name;
    }

    public function
set_proxy_name($n) {
       
$this->proxy_name = $n;
    }

    public function
get_proxy_port() {
        return
$this->proxy_port;
    }

    public function
set_proxy_port($p) {
       
$this->proxy_port = $p;
    }

    public function
get_request_url() {
        return
$this->request_url;
    }

    public function
set_request_url($u) {
       
$this->request_url = $u;
    }

    public function
get_result() {
        return
$this->result;
    }

    public function
set_result($r) {
       
$this->result = $r;
    }

    private function
get_url_via_proxy() {

       
$proxy_fp = fsockopen($this->get_proxy_name(), $this->get_proxy_port());

        if (!
$proxy_fp) {
            return
false;
        }
       
fputs($proxy_fp, "GET " . $this->get_request_url() . " HTTP/1.0\r\nHost: " . $this->get_proxy_name() . "\r\n\r\n");
        while (!
feof($proxy_fp)) {
           
$proxy_cont .= fread($proxy_fp, 4096);
        }
       
fclose($proxy_fp);
       
$proxy_cont = substr($proxy_cont, strpos($proxy_cont, "\r\n\r\n") + 4);
        return
$proxy_cont;

    }

    private function
get_url($url) {
       
$fd = @ file($url);
        if (
$fd) {
            return
$fd;
        } else {
            return
false;
        }
    }

    private function
logger($line, $file) {
       
$fd = fopen($file . ".log", "a+");
       
fwrite($fd, date("Ymd G:i:s") . " - " . $file . " - " . $line . "\n");
       
fclose($fd);
    }

    function
__construct($url, $proxy_name = "", $proxy_port = "") {

       
$this->set_request_url($url);
       
$this->set_proxy_name($proxy_name);
       
$this->set_proxy_port($proxy_port);

    }

    public function
request_via_proxy() {

       
$this->set_result($this->get_url_via_proxy());
        if (!
$this->get_result()) {
           
$this->logger("FAILED: get_url_via_proxy(" . $this->get_proxy_name() . "," . $this->get_proxy_port() . "," . $this->get_request_url() . ")", "RemoteFopenViaProxyClass.log");
        }
    }

    public function
request_without_proxy() {

       
$this->set_result($this->get_url($this->get_request_url()));
        if (!
$this->get_result()) {
           
$this->logger("FAILED: get_url(" . $url . ")", "RemoteFopenViaProxyClass.log");
        }
    }
}
?>

Use it this way:

<?php
// call constructor
$obj = new RemoteFopenViaProxy($insert_request_url, $insert_proxy_name, $insert_proxy_port);
// change settings after object generation
$obj->set_proxy_name($insert_proxy_name);
$obj->set_proxy_port($insert_proxy_port);
$obj->set_request_url($insert_request_url);
$obj->request_via_proxy();
echo
$obj->get_result();
?>

If there are errors during execution, the script tries to write some useful information into a log file.
up
0
dot dot dot dot dot alexander at gmail dot com
6 years ago
An edit to my below function for extra headers support and a bit of debugging
( array("key" => "value")  type)
 <?php

if(!function_exists("download")){
    function
download($uri, $port = 80, $extra_headers = NULL){
if(!
function_exists("stripos")){
    function
stripos($str, $needle, $offset=0){
        return
strpos(strtolower($str),strtolower($needle),$offset);
    }
/* endfunction stripos */
}/* endfunction exists stripos*/
       
if(!is_int($port))$port = 80;
        if(!
is_array($extra_headers))$extra_headers = array();
       
$uri = strtr( strval($uri), array("http://" => "", "https://" => "ssl://", "ssl://" => "ssl://", "\\" => "/", "//" => "/") );
       
        if(  (
$protocol = stripos($uri, "://") ) !== FALSE  ){
            if(  (
$domain_pos = stripos($uri, "/", ($protocol + 3)) ) !== FALSE  ){
               
$domain = substr($uri, 0, $domain_pos);
               
$file = substr($uri, $domain_pos);
            }
            else{
               
$domain = $uri;
               
$file = "/";
            }
        }
        else{
            if(  (
$domain_pos = stripos($uri, "/") ) !== FALSE  ){
               
$domain = substr($uri, 0, $domain_pos);
               
$file = substr($uri, $domain_pos);
            }
            else{
               
$domain = $uri;
               
$file = "/";
            }
        }
       
       
$fp = fsockopen($domain, $port, $errno, $errstr, 30);
        if(!
$fp){
            return
FALSE;
        }
        else{
           
$out = "GET " . $file . " HTTP/1.1\r\n";
           
$out .= "Host: " . $domain . "\r\n";
            foreach(
$extra_headers as $nm => $vl ){
   
$out .= strtr( strval($nm), array( "\r" => "", "\n" => "", ": " => "", ":" => "") ) . ": " . strtr( strval($vl), array( "\r" => "", "\n" => "", ": " => "", ":" => "") ) . "\r\n";
            }
           
$out .= "Connection: Close\r\n\r\n";
           
           
$response = "";
           
fwrite($fp, $out);
            while (!
feof($fp)) {
               
$response .= fgets($fp, 128);
            }
           
fclose($fp);
           
            global
$http_response_header;
           
$http_response_header = array();
            if( 
stripos($response, "\r\n\r\n") !== FALSE  ){
               
$hc = explode("\r\n\r\n"$response);
               
$headers = explode("\r\n"$hc[0]);
               
                if(!
is_array($headers))$headers = array();
                foreach(
$headers as $key => $header){
                   
$a = "";
                   
$b = "";
                    if( 
stripos($header, ":") !== FALSE  ){
                        list(
$a, $b) = explode(":", $header);
                       
$http_response_header[trim($a)] = trim($b);
                    }
                }
                return
end($hc);
            }
            else if( 
stripos($response, "\r\n") !== FALSE  ){
               
$headers = explode("\r\n"$response);
               
                if(!
is_array($headers))$headers = array();
                foreach(
$headers as $key => $header){
                    if( 
$key < ( count($headers) - 1 )  ){
                       
$a = "";
                       
$b = "";
                        if( 
stripos($header, ":") !== FALSE  ){
                            list(
$a, $b) = explode(":", $header);
                           
$http_response_header[trim($a)] = trim($b);
                        }
                    }
                }
                return
end($headers);
            }
            else{
                return
$response;
            }
        }
    }
/*endfunction download*/
}/*endif no function download*/
?>
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0
huli0401 at gmail dot com
6 years ago
<?php
// Check for new version
   
$current_version = explode('.', '1.0.00');
   
$minor_revision = (int) $current_version[2];

   
$errno = 0;
   
$errstr = $version_info = '';

    if (
$fsock = fsockopen("www.exanmple.eu", 80, $errno, $errstr, 30))
    {
        @
fputs($fsock, "GET /ver.txt HTTP/1.1\r\n");
        @
fputs($fsock, "HOST: www.example.eu\r\n");
        @
fputs($fsock, "Connection: close\r\n\r\n");

       
$get_info = false;
        while (!@
feof($fsock))
        {
            if (
$get_info)
            {
               
$version_info .= @fread($fsock, 1024);
            }
            else
            {
                if (@
fgets($fsock, 1024) == "\r\n")
                {
                   
$get_info = true;
                }
            }
        }
        @
fclose($fsock);

       
$version_info = explode("\n", $version_info);
       
$latest_head_revision = (int) $version_info[0];
       
$latest_minor_revision = (int) $version_info[2];
       
$latest_version = (int) $version_info[0] . '.' . (int) $version_info[1] . '.' . (int) $version_info[2];

        if (
$latest_head_revision == 2 && $minor_revision == $latest_minor_revision)
        {
           
$version_info = '<p style="color:green">OK</p>';
        }
        else
        {
           
$version_info = '<p style="color:red">neaktualne';
           
$version_info .= '<br />'Latest_version_info' . $latest_version) . ' ' . sprintf(Current_version_info'. '1.0.00') . '</p>';
        }
    }
    else
    {
        if (
$errstr)
        {
           
$version_info = '<p style="color:red">' . sprintf(Connect_socket_error) . '</p>';
        }
        else
        {
           
$version_info = '<p>'Socket_functions_disabled'</p>';
        }
    }
   
   
$version_info .= '<p>'Mailing_list_subscribe_reminder'</p>';

echo
$version_info;
?>
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0
Adlez
6 years ago
For those of you who do not have cURL, you might want to try this.
It doesn't have all the functions that cURL has, but it has the basics.
Please let me know of any bugs or problems.

<?php
function open_page($url,$f=1,$c=2,$r=0,$a=0,$cf=0,$pd=""){
 global
$oldheader;
 
$url = str_replace("http://","",$url);
 if (
preg_match("#/#","$url")){
 
$page = $url;
 
$url = @explode("/",$url);
 
$url = $url[0];
 
$page = str_replace($url,"",$page);
  if (!
$page || $page == ""){
  
$page = "/";
  }
 
$ip = gethostbyname($url);
 }else{
 
$ip = gethostbyname($url);
 
$page = "/";
 }
 
$open = fsockopen($ip, 80, $errno, $errstr, 60);
 if (
$pd){
 
$send = "POST $page HTTP/1.0\r\n";
 }else{
 
$send = "GET $page HTTP/1.0\r\n";
 }
 
$send .= "Host: $url\r\n";
 if (
$r){
 
$send .= "Referer: $r\r\n";
 }else{
  if (
$_SERVER['HTTP_REFERER']){
  
$send .= "Referer: {$_SERVER['HTTP_REFERER']}\r\n";
  }
 }
 if (
$cf){
  if (@
file_exists($cf)){
  
$cookie = urldecode(@file_get_contents($cf));
   if (
$cookie){
   
$send .= "Cookie: $cookie\r\n";
   
$add = @fopen($cf,'w');
   
fwrite($add,"");
   
fclose($add);
   }
  }
 }
 
$send .= "Accept-Language: en-us, en;q=0.50\r\n";
 if (
$a){
 
$send .= "User-Agent: $a\r\n";
 }else{
 
$send .= "User-Agent: {$_SERVER['HTTP_USER_AGENT']}\r\n";
 }
 if (
$pd){
 
$send .= "Content-Type: application/x-www-form-urlencoded\r\n"
 
$send .= "Content-Length: " .strlen($pd) ."\r\n\r\n";
 
$send .= $pd;
 }else{
 
$send .= "Connection: Close\r\n\r\n";
 }
 
fputs($open, $send);
 while (!
feof($open)) {
 
$return .= fgets($open, 4096);
 }
 
fclose($open);
 
$return = @explode("\r\n\r\n",$return,2);
 
$header = $return[0];
 if (
$cf){
  if (
preg_match("/Set\-Cookie\: /i","$header")){
  
$cookie = @explode("Set-Cookie: ",$header,2);
  
$cookie = $cookie[1];
  
$cookie = explode("\r",$cookie);
  
$cookie = $cookie[0];
  
$cookie = str_replace("path=/","",$cookie[0]);
  
$add = @fopen($cf,'a');
  
fwrite($add,$cookie,strlen($read));
  
fclose($add);
  }
 }
 if (
$oldheader){
 
$header = "$oldheader<br /><br />\n$header";
 }
 
$header = str_replace("\n","<br />",$header);
 if (
$return[1]){
 
$body = $return[1];
 }else{
 
$body = "";
 }
 if (
$c === 2){
  if (
$body){
  
$return = $body;
  }else{
  
$return = $header;
  }
 }
 if (
$c === 1){
 
$return = $header;
 }
 if (
$c === 3){
 
$return = "$header$body";
 }
 if (
$f){
  if (
preg_match("/Location\:/","$header")){
  
$url = @explode("Location: ",$header);
  
$url = $url[1];
  
$url = @explode("\r",$url);
  
$url = $url[0];
  
$oldheader = str_replace("\r\n\r\n","",$header);
  
$l = "&#76&#111&#99&#97&#116&#105&#111&#110&#58";
  
$oldheader = str_replace("Location:",$l,$oldheader);
   return
open_page($url,$f,$c,$r,$a,$cf,$pd);
  }else{
   return
$return;
  }
 }else{
  return
$return;
 }
}
/////////////
////Usage////
/////////////
$url = "http://www.php.net";
$f = 1;
$c = 2;//1 for header, 2 for body, 3 for both
$r = NULL;
$a = NULL;
$cf = NULL;
$pd = NULL;
$page = open_page($url,$f,$c,$r,$a,$cf,$pd);
print
$page;
?>
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0
bradland at umich dot edu
6 years ago
I was having trouble doing an https in fopen and with fsockopen where the address had ssl://.  I was getting error code 114 in the log.  After much research i found that there was some ssl conflict trouble with MySQL 5.0.20-5.0.33.  It had some functions that were interfering with openssl that showed up in the php install.

http://bugs.mysql.com/bug.php?id=21930
http://bugs.mysql.com/bug.php?id=19289
up
0
v13+phpnet at it dot teithe dot gr
7 years ago
The following function performs pop3 authentication. Returns NULL on error, or true/false to indicate username/password matching:

$address is the hostname of the server and $ssl is a boolean that indicates whether an SSL connection is requested.

<?php
function pop3authCheck($username, $password, $address, $ssl)
{
    if (
$ssl)
       
$uri="ssl://$address:995";
    else
       
$uri="tcp://$address:110";

   
$fp=fsockopen($uri);

    if (!
$fp)
        return(
NULL);

   
$st=fgets($fp, 512);
    if (
substr($st, 0, 3)!="+OK")
    {
       
fclose($fp);
        return(
NULL);
    }

   
$st="USER $username\n";
    if (
fwrite($fp, $st)!=strlen($st))
    {
       
fclose($fp);
        return(
NULL);
    }

   
$st=fgets($fp, 512);
    if (
substr($st, 0, 3)!="+OK")
    {
       
fclose($fp);
        return(
NULL);
    }

   
$st="PASS $password\n";
    if (
fwrite($fp, $st)!=strlen($st))
    {
       
fclose($fp);
        return(
NULL);
    }

   
$st=fgets($fp, 512);
   
fclose($fp);
    if (
substr($st, 0, 3)=="+OK")
        return(
true);
    else if (
substr($st, 0, 4)=="+ERR")
        return(
false);
    else
        return(
NULL);
}
?>
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0
Anonymous
7 years ago
I've had issues with some of the handlers for chunked http 1.1 responses.  Here's a method that worked for me, if it works for you as well, then cheers :P

<?php

   
function httpSocketConnection($host, $method, $path, $data)
    {
       
$method = strtoupper($method);       
       
        if (
$method == "GET")
        {
           
$path.= '?'.$data;
        }   
       
       
$filePointer = fsockopen($host, 80, $errorNumber, $errorString);
       
        if (!
$filePointer)
        {
           
logEvent('debug', 'Failed opening http socket connection: '.$errorString.' ('.$errorNumber.')<br/>\n');
            return
false;
        }

       
$requestHeader = $method." ".$path."  HTTP/1.1\r\n";
       
$requestHeader.= "Host: ".$host."\r\n";
       
$requestHeader.= "User-Agent:      Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1) Gecko/20061010 Firefox/2.0\r\n";
       
$requestHeader.= "Content-Type: application/x-www-form-urlencoded\r\n";

        if (
$method == "POST")
        {
           
$requestHeader.= "Content-Length: ".strlen($data)."\r\n";
        }
       
       
$requestHeader.= "Connection: close\r\n\r\n";
       
        if (
$method == "POST")
        {
           
$requestHeader.= $data;
        }           

       
fwrite($filePointer, $requestHeader);
       
       
$responseHeader = '';
       
$responseContent = '';

        do
        {
           
$responseHeader.= fread($filePointer, 1);
        }
        while (!
preg_match('/\\r\\n\\r\\n$/', $responseHeader));
       
       
        if (!
strstr($responseHeader, "Transfer-Encoding: chunked"))
        {
            while (!
feof($filePointer))
            {
               
$responseContent.= fgets($filePointer, 128);
            }
        }
        else
        {

            while (
$chunk_length = hexdec(fgets($filePointer)))
            {
               
$responseContentChunk = '';
           
               
logEventToTextFile('debug', $chunk_length);
               
$read_length = 0;
               
                while (
$read_length < $chunk_length)
                {
                   
$responseContentChunk .= fread($filePointer, $chunk_length - $read_length);
                   
$read_length = strlen($responseContentChunk);
                }

               
$responseContent.= $responseContentChunk;
               
               
fgets($filePointer);
               
            }
           
        }

       
logEventToTextFile('debug', $responseContent);
       
       
        return
chop($responseContent);
    }

?>
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0
yadiutama_skom at yahoo dot com
8 years ago
This is a simple example for sending and retrieve SOAP message by using fsockopen:

<?php
$fp
= @fsockopen("www.example.com", 80, $errno, $errstr);
if (!
$fp) {
    echo
"$errstr ($errno)<br />\n";
} else {

$soap_out  = "POST /example/exampleServer.php HTTP/1.0\r\n";
$soap_out .= "Host: www.example.com\r\n";
$soap_out .= "User-Agent: MySOAPisOKGuys \r\n";
$soap_out .= "Content-Type: text/xml; charset=ISO-8859-1\r\n";
$soap_out .= "Content-Length: 512\r\n\r\n";
$soap_out .= '<?xml version="1.0" encoding="ISO-8859-1"?>
<SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body>
<ns5973:contact xmlns:ns5973="http://tempuri.org">
<__numeric_0><id  xsi:nil="true"/></__numeric_0>
</ns5973:contact>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>'
;

   
fputs($fp, $soap_out, strlen($soap_out));  // send request SOAP

   
echo "<xmp>".$out."</xmp>";

    while (!
feof($fp)) {
       
$soap_in . = fgets($fp, 100);
    }

    echo
"<xmp>$soap_in</xmp>";   //display response SOAP

   
fclose($fp);
}
?>

And this is an example result:

POST /soap/example/contactServer.php HTTP/1.0
Host: www.example.com
User-Agent: MySOAPisOKGuys
Content-Type: text/xml; charset=ISO-8859-1
Content-Length: 512
<?xml version="1.0" encoding="ISO-8859-1"?>
<SOAP-ENV:Envelope
SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body><ns5973:contact
xmlns:ns5973="http://tempuri.org"><__numeric_0><id
xsi:nil="true"/></__numeric_0></ns5973:contact>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

HTTP/1.1 200 OK
Date: Thu, 06 Apr 2006 07:03:26 GMT
Server: Apache/1.3.23 (Win32)
X-Powered-By: PHP/4.1.1
X-SOAP-Server: MySOAPisOKGuys
Content-Length: 625
Connection: close
Content-Type: text/xml; charset=ISO-8859-1
<?xml version="1.0" encoding="ISO-8859-1"?>
<SOAP-ENV:Envelope
SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body><ns1:contactResponse
xmlns:ns1="http://tempuri.org">
<return xsi:type="xsd:string">
</return>
</ns1:contactResponse>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
up
0
Duukkis
8 years ago
Lots of tries and lots of reading http-headers...

If you want to post $_POST vars and (in this case) one file named userfile to $remote_server and $remote_url.

<?php
       
// get the necessary data
       
$file_name = $_FILES['userfile']['name'];     // the file
       
$tmp_name = $_FILES['userfile']['tmp_name'];     // the file
       
$content_type = $_FILES['userfile']['type'];     // the file mime type
       
       
srand((double)microtime()*1000000);
       
$boundary = "---------------------".substr(md5(rand(0,32000)),0,10);
       
       
// Build the header
       
$header = "POST $remote_url HTTP/1.0\r\n";
       
$header .= "Host: $remote_server\r\n";
       
$header .= "Content-type: multipart/form-data, boundary=$boundary\r\n";
       
// attach post vars
       
foreach($_POST AS $index => $value){
           
$data .="--$boundary\r\n";
           
$data .= "Content-Disposition: form-data; name=\"".$index."\"\r\n";
           
$data .= "\r\n".$value."\r\n";
           
$data .="--$boundary\r\n";
        }
       
// and attach the file
       
$data .= "--$boundary\r\n";
       
$content_file = join("", file($tmp_name));
       
$data .="Content-Disposition: form-data; name=\"userfile\"; filename=\"$file_name\"\r\n";
       
$data .= "Content-Type: $content_type\r\n\r\n";
       
$data .= "".$content_file."\r\n";
       
$data .="--$boundary--\r\n";
       
$header .= "Content-length: " . strlen($data) . "\r\n\r\n";
                
// Open the connection
       
$fp = fsockopen($remote_server, 80);
       
// then just
       
fputs($fp, $header.$data);
       
fclose($fp);
?>
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ittasks at gmail dot com
8 years ago
login to the site prior to downloading page:

In some wierd situations site security is based on
 ASPSESSION ID and where could be a
 login asp  script in one place, and the actual page with
information in another place.

for such cases you have to submit ( POST ) you login and
password first, when grab ASP session (and also some
cookies from response, and when use that ASP SESSION in
second request to the actual page: (i took some parts of
codes from other ppl)
<?php
//submit login form: (url, post data, extra headers (optional))
//do not put  http into URL, just domain name
$mycookies = GetCookies("www.yourdomain.com/login.login.asp",
"password=12345&username=your_username&submit=LOGIN&set=Y","");
//some extra params if you need them
// echo "Cookies:<br><pre>\n".$mycookies."\n</pre>";
//$body =PostPage("www.example.com/coolpage.asp",
//"action=zzz",$mycookies);
//echo "<br>Body:<br>\n".$body."\n";
//im using get page - so it goes like this:
$opts = array('http'=>array('method'=>"GET",
'header'=>"Accept-language: en\r\nCookie: ".$mycookies."\r\n" ));
$context = stream_context_create($opts);
$fp = fopen('http://www.example.com/coolpage.asp?p1=1&p2=23', 'r', false, $context);
fpassthru($fp);
$html = fread($fp, 1000000);
fclose($fp);
echo
$html;

function
PostPage($host,$query,$others=''){
  
$path=explode('/',$host);
  
$host=$path[0];
   unset(
$path[0]);
  
$path='/'.(implode('/',$path));
$post="POST $path HTTP/1.1\r\nHost: $host\r\n";
$post.="Content-type: application/x-www-form-";
$post.="urlencoded\r\n${others}";
$post.="User-Agent: Mozilla 4.0\r\nContent-length: ";
$post.=strlen($query)."\r\nConnection: close\r\n\r\n$query";
  
$h=fsockopen($host,80);
  
fwrite($h,$post);
   for(
$a=0,$r='';!$a;){
      
$b=fread($h,8192);
      
$r.=$b;
      
$a=(($b=='')?1:0);
   }
  
fclose($h);
   return
$r;
}
function
GetCookies($host,$query,$others=''){
  
$path=explode('/',$host);
  
$host=$path[0];
   unset(
$path[0]);
  
$crlf = "\r\n";
  
$path='/'.(implode('/',$path));
  
$post="POST $path HTTP/1.1\r\nHost: $host\r\n";
$post.="Content-type: application/x-www-form-urlencoded\r\n${others}";
$post.="User-Agent: Mozilla 4.0\r\nContent-length: ";
$post.=strlen($query)."\r\nConnection: close\r\n\r\n$query";
  
$h=fsockopen($host,80);
  
fwrite($h,$post);
  
$r="";
   for(
$a=0;!$a;){
      
$b=fread($h,512);
       echo
$b;
      
$r.=$b;
      
$gotSession=strpos($r,"ASPSESSION");
   if(
$gotSession)
      if(
strpos($r, $crlf . $crlf,$gotSession)>0) break;
      
$a=(($b=='')?1:0);
   }
  
fclose($h);
  
$arr = split("Set-Cookie:",$r);
  
$AllCookies="";$count=1;
   while (
$count < count($arr)) {
$AllCookies.=substr($arr[$count].";",
0,strpos($arr[$count].";",";")+1);

 
$count++;}
   return
$AllCookies;

}
 
?>

It's not optimized , but i hope someone might find it usefull.
Best Regards
DRY_GIN
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sivann at cs dot ntua dot gr
8 years ago
This is an ident request example. If your client is running identd your real username will be known by the server.
It is also usefull to identify people bypassing IP ACLs by using SOCKS proxy and dynamic IP forwarding. If the socks proxy server uses ident (most unices do) you will know his real username.
For more information see RFC1413
Timeout of 2 seconds in the example may not be enough.

<?php
error_reporting
(E_ALL);
$remip = $HTTP_SERVER_VARS['REMOTE_ADDR'];
$remport = $HTTP_SERVER_VARS['REMOTE_PORT'];

ob_implicit_flush();
$fp = fsockopen($remip, 113, $errno, $errstr, 2);
if (!
$fp) {
   echo
"$errstr ($errno)<br>\n";
   exit;
}
else {
  
$out = "$remport, 80\r\n";
  
fwrite($fp, $out);
  
$answer=fgets($fp, 128);
}
fclose($fp);
$ansparts=explode(":",$answer);
$user=chop($ansparts[3]);
echo
"You are $user@$remip:$remport";

?>
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Kiki_EF
8 years ago
Additional ICQ status request over proxy
<?php
function icq_uin($uin)
{
    if (!
is_numeric($uin))
        return
false;
   
$proxy_name = 'proxy.mydomain.de';
   
$proxy_port = 8080;
   
$proxy_user = "";
   
$proxy_pass = "";
   
$proxy_cont = '';
   
$request_url = "http://status.icq.com/online.gif?icq=$uin";

   
$proxy_fp = fsockopen($proxy_name, $proxy_port);
    if (!
$proxy_fp)
        return
false;
   
fputs($proxy_fp, "GET $request_url HTTP/1.0\r\nHost: $proxy_name\r\n");
   
fputs($proxy_fp, "Proxy-Authorization: Basic ". base64_encode ("$proxy_user:$proxy_pass")."\r\n\r\n");
    while(!
feof($proxy_fp)){
       
$proxy_cont .= fread($proxy_fp,4096);
    }
   
fclose($proxy_fp);
   
$proxy_cont = substr($proxy_cont, strpos($proxy_cont,"\r\n\r\n")+4);
    if (
strstr($proxy_cont, 'online1'))
        return
'online';
    if (
strstr($proxy_cont, 'online0'))
        return
'offline';
    if (
strstr($proxy_cont, 'online2'))
        return
'disabled';
}
echo
"User is ".icq_uin(123456789012345);
?>

Thanx

[EDIT BY danbrown AT php DOT net: Based on code provided in a note by (rafaelbc AT matrix DOT com DOT br) on 23-MAY-09, which has since been removed.]
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dna at revold-design dot de
8 years ago
Something useful for ICQ:
<?php
$icquin
= "197829943";
function
GetICQ($uin) {
    if (!
is_numeric($uin)) return FALSE;

   
$fp = fsockopen('status.icq.com', 80, $errno, $errstr, 8);
    if (!
$fp) {
    return
"N/A";
        }
    else {

   
$request = "HEAD /online.gif?icq=$uin HTTP/1.0\r\n"
             
."Host: web.icq.com\r\n"
             
."Connection: close\r\n\r\n";
   
fputs($fp, $request);

    do {
       
$response = fgets($fp, 1024);
    }
    while (!
feof($fp) && !stristr($response, 'Location'));

   
fclose($fp);

    if (
strstr($response, 'online1')) return 'Online';
    if (
strstr($response, 'online0')) return 'Offline';
    if (
strstr($response, 'online2')) return 'N/A';
   
// N/A means, this User set the Option, his Online
    // Status cannot be shown over the Internet
   
   
return FALSE;
    }
}

echo
GetICQ($icquin);
?>
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0
richard dot lajaunie at cote-azur dot cci dot fr
8 years ago
<?php
/************************************************************
* Author: Richard Lajaunie
* Mail : richard.lajaunie@cote-azur.cci.fr
*
* subject : this script retreive all mac-addresses on all ports
* of a Cisco 3548 Switch by a telnet connection
*
* base on the script by: xbensemhoun at t-systems dot fr
**************************************************************/

if ( array_key_exists(1, $argv) ){
  
$cfgServer = $argv[1];
}else{
   echo
"ex: 'php test.php 10.0.0.0' \n";
   exit;
}

$cfgPort    = 23;                //port, 22 if SSH
$cfgTimeOut = 10;

$usenet = fsockopen($cfgServer, $cfgPort, $errno, $errstr), $cfgTimeOut);

if(!
$usenet){
       echo
"Connexion failed\n";
       exit();
}else{
       echo
"Connected\n";
      
fputs ($usenet, "password\r\n");
      
fputs ($usenet, "en\r\n");
      
fputs ($usenet, "password\r\n");
      
fputs ($usenet, "sh mac-address-table\r\n");
      
fputs ($usenet, " "); // this space bar is this for long output
     
       // this skip non essential text
      
$j = 0;
       while (
$j<16){
      
fgets($usenet, 128);
      
$j++;
       }
  
stream_set_timeout($usenet, 2); // set the timeout for the fgets
  
$j = 0;
       while (!
feof($usenet)){
      
$ret = fgets($usenet, 128);
      
$ret = str_replace("\r", '', $ret);
      
$ret = str_replace("\n", "", $ret);
       if  (
ereg("FastEthernet", $ret)){
           echo
"$ret \n";
       }
       if (
ereg('--More--', $ret) ){
          
fputs ($usenet, " "); // for following page
      
}
      
$info = stream_get_meta_data($usenet);
       if (
$info['timed_out']) {
          
$j++;
       }
       if (
$j >2){
          
fputs ($usenet, "lo");
           break;
       }
   }
}
echo
"End.\r\n";
?>
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0
saul dot dobney at dobney dot com
9 years ago
If you are using fsockopen to access webpage, but come across a redirect (Location: ) in the header and want to find and follow the redirect as in this snippet:

<?php
while (!feof($fp)) {
  
$line=fgets($fp, 1024);               
   if (
stristr($line,"location:")!="") {
   
$redirect=preg_replace("/location:/i","",$line);
   }
}
?>

Then don't forget to <?php $redirect = trim($redirect); ?> before trying to follow this new link as $redirect actually has a \r\n on the end of it and won't give you a valid path in the next iteration otherwise. A six hour bug.

Saul Dobney
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ahauk at NO-SPAM dot synergynt dot net
9 years ago
The following script will login to a POP3 account using the username, password and server name provided via a standard form; determine the amount of messages using a binary search; then purge all messages.

<?php
    $server
= $_POST["server"];
   
$user = $_POST["user"];
   
$pass = $_POST["pass"];
   
$count = 1;
   
$low = 0;
   
$mid = 0;
   
$high = 100000;
   
$connection = fsockopen($server, 110, $errno, $errstr, 30);

    if(!
$connection) {
        print
"Connect Failed: $errstr ($errno)";
    } else {
       
$output = fgets($connection, 128);
       
fputs($connection, "user $user\n");
       
$output = fgets($connection, 128);
       
fputs($connection, "pass $pass\n");
       
$output = fgets($connection, 128);
        while(
$low < $high - 1) {
           
$mid = floor(($low + $high) / 2);
           
fputs($connection, "list $mid\n");
           
$output = fgets($connection, 128);
           
$subout = substr($output, 0, 4);
            if(
$subout == "+OK ") {
               
$low = $mid;
                continue;
            }
            elseif(
$subout == "-ERR") {
                   
$high = $mid;
                    continue;
            } else {
                break;
                print
"An error has occurred. Please try again.";
            }
        }
       
$limit = $mid - 1;
        while(
$count <= $limit) {
           
fputs($connection, "dele $count\n");
           
fgets($connection, 128);
           
$count = $count + 1;
        }
       
fputs($connection, "quit\n");
    }
   
fclose($connection);
    print
"Successfully removed $limit messages.";
?>
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dante at dantecubed dot com
9 years ago
You may be able to speed this function up by using an IP address instead of a domain. PHP uses getHostByAddr internally in this function anyway, so you can save a step in the function process.
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0
konrad dot meyer at gmail dot com
9 years ago
The documentation example is of a GET request. I have found POST documentation to be lacking, and here's a function to easily simulate submitting form data:

<?php
# $host includes host and path and filename
    # ex: "myserver.com/this/is/path/to/file.php"
# $query is the POST query data
    # ex: "a=thisstring&number=46&string=thatstring
# $others is any extra headers you want to send
    # ex: "Accept-Encoding: compress, gzip\r\n"
function post($host,$query,$others=''){
   
$path=explode('/',$host);
   
$host=$path[0];
    unset(
$path[0]);
   
$path='/'.(implode('/',$path));
   
$post="POST $path HTTP/1.1\r\nHost: $host\r\nContent-type: application/x-www-form-urlencoded\r\n${others}User-Agent: Mozilla 4.0\r\nContent-length: ".strlen($query)."\r\nConnection: close\r\n\r\n$query";
   
$h=fsockopen($host,80);
   
fwrite($h,$post);
    for(
$a=0,$r='';!$a;){
       
$b=fread($h,8192);
       
$r.=$b;
       
$a=(($b=='')?1:0);
    }
   
fclose($h);
    return
$r;
}
?>
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0
edwin at bitstorm dot org
9 years ago
Here's a function to just fetch the contents behind an URL.

<?php
function fetchURL( $url ) {
   
$url_parsed = parse_url($url);
   
$host = $url_parsed["host"];
   
$port = $url_parsed["port"];
    if (
$port==0)
       
$port = 80;
   
$path = $url_parsed["path"];
    if (
$url_parsed["query"] != "")
       
$path .= "?".$url_parsed["query"];

   
$out = "GET $path HTTP/1.0\r\nHost: $host\r\n\r\n";

   
$fp = fsockopen($host, $port, $errno, $errstr, 30);

   
fwrite($fp, $out);
   
$body = false;
    while (!
feof($fp)) {
       
$s = fgets($fp, 1024);
        if (
$body )
           
$in .= $s;
        if (
$s == "\r\n" )
           
$body = true;
    }
   
   
fclose($fp);
   
    return
$in;
}
?>
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0
michiel at parse dot nl
9 years ago
The following snippet allows you to retrieve the title of a page.

Great for rewriting auto-url detectors to display the actual title rather then http://...

<?php
echo get_url_title("http://www.php.net/cal.php?id=409");

function
get_url_title($url, $timeout = 2)
{
   
$url = parse_url($url);

    if(!
in_array($url['scheme'],array('','http')))
        return;

   
$fp = fsockopen ($url['host'], ($url['port'] > 0 ? $url['port'] : 80), $errno, $errstr, $timeout);
    if (!
$fp)
    {
        return;
       
// echo "$errstr ($errno)<br>\n";
   
}
    else
    {
       
fputs ($fp, "GET /".$url['path'].($url['query'] ? '?'.$url['query'] : '')." HTTP/1.0\r\nHost: ".$url['host']."\r\n\r\n");
       
$d = '';
        while (!
feof($fp))
        {
           
$d .= fgets ($fp,2048);

            if(
preg_match('~(</head>|<body>|(<title>\s*(.*?)\s*</title>))~i', $d, $m))
                break;
        }
       
fclose ($fp);

        return
$m[3];
    }
}
?>
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alex at renesource dot lv
10 years ago
Set up SSL connection to server that requires client certificate:

Convert client certificate from *.pfx (pkcs12) into*.pem with openssl (if needed):

> openssl pkcs12 -in keys.pfx -out keys.pem

PHP:

<?php
$context
= stream_context_create();
$result = stream_context_set_option($context, 'ssl', 'local_cert', '/path/to/keys.pem');
$result = stream_context_set_option($context, 'ssl', 'passphrase', 'pass_to_access_keys');

$socket = fsockopen('ssl://'.$host, 443, $errno, $errstr, 30, $context);
?>
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0
sir_reality2001 at yahoo dot com
10 years ago
<?php
// This script is an example of posting multiple files using
// fsockopen.
// The tricky part is making sure the HTTP headers and file boundaries are acceptable to the target webserver.
// This script is for example purposes only and could/should be improved upon.

$host='targethost';
$port=80;
$path='/test/socket/file_upload/receive_files.php';

// the file you want to upload
$file_array[0] = "dingoboy.gif"; // the file
$file_array[1] = "dingoboy2.gif"; // the file
$file_array[2] = "dingoboy3.gif"; // the file
$content_type = "image/gif"; // the file mime type
//$content_type = "text/plain";
//echo "file_array[0]:$file_array[0]<br><br>";

srand((double)microtime()*1000000);
$boundary = "---------------------------".substr(md5(rand(0,32000)),0,10);

$data = "--$boundary";

for(
$i=0;$i<count($file_array);$i++){
  
$content_file = join("", file($file_array[$i]));

  
$data.="
Content-Disposition: form-data; name=\"file"
.($i+1)."\"; filename=\"$file_array[$i]\"
Content-Type:
$content_type

$content_file
--
$boundary";

}

$data.="--\r\n\r\n";

$msg =
"POST $path HTTP/1.0
Content-Type: multipart/form-data; boundary=
$boundary
Content-Length: "
.strlen($data)."\r\n\r\n";

$result="";

// open the connection
$f = fsockopen($host, $port);

fputs($f,$msg.$data);

// get the response
while (!feof($f)) $result .= fread($f,32000);

fclose($f);

?>
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0
rob at robhulme dot com
10 years ago
Just a note to everyone who is using fsockopen and fread / fgets for a HTTP connection.

Unless you specify "Connection: Close" in your headers you will need to wait for the socket to time out before feof($streamPointer) to return true.

This has wasted 2 days of my time, grr!

-Rob
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0
terminal
10 years ago
Try this.
Use AUTH when necessary.
Read RFC 821 when having problems.

<?php

    $handle
= smtp_connect($smtp_server, 25, 30, 1, 1, 1);
    echo
smtp_command($handle, "EHLO $domain\r\n", 1, 1);
    echo
smtp_command($handle, "MAIL FROM:<$from_mail>\r\n", 1, 1);
    echo
smtp_command($handle, "RCPT TO:<$to_mail>\r\n", 1, 1);
    echo
smtp_command($handle, "DATA\r\n", 1, 1);
    echo
smtp_command($handle, "$message\r\n.\r\n", 1, 1);
   
// don't do it like this - it will hang up
    // echo smtp_command($handle, "$message", 1, 1);
    // echo smtp_command($handle, "\r\n.\r\n", 1, 1);
   
echo smtp_command($handle, "QUIT\r\n", 1, 1);
   
smtp_close($handle);
   
   
    function
smtp_connect($host, $port, $timeout=30, $echo_command=False, $echo_response=False, $nl2br=False)
    {
       
$errno = 0;
       
$errstr = 0;
        if(
$echo_command)
        {
            if(
$nl2br) { echo nl2br("CONNECTING TO $host\r\n"); }
            else { echo
"CONNECTING TO $host\r\n"; }
        }
       
$handle = fsockopen($host, $port, $errno, $errstr, $timeout);
        if(!
$handle)
        {
            if(
$echo_command)
            {
                if(
$nl2br) { echo nl2br("CONNECTION FAILED\r\n"); }
                else { echo
"CONNECTION FAILED\r\n"; }
            }
            return
False;
        }
        if(
$echo_command)
        {
            if(
$nl2br) { echo nl2br("SUCCESS\r\n"); }
            else { echo
"SUCCESS\r\n"; }
        }
       
$response = fgets($handle,1);
       
$bytes_left = socket_get_status($handle);
        if (
$bytes_left > 0) { $response .= fread($handle, $bytes_left["unread_bytes"]); }
        if(
$echo_response)
        {
            if(
$nl2br) { echo nl2br($response); }
            else { echo
$response; }
        }
        return
$handle;
    }

    function
smtp_command($handle, $command, $echo_command=False, $nl2br=False)
    {
        if(
$echo_command)
        {
            if(
$nl2br) { echo nl2br($command); }
            else { echo
$command; }
        }
       
fputs($handle, $command);
       
$response = fgets($handle,1);
       
$bytes_left = socket_get_status($handle);
        if (
$bytes_left > 0) { $response .= fread($handle, $bytes_left["unread_bytes"]); }
        if(
$nl2br) { return nl2br($response); }
        else { return
$response; }
    }
   
    function
smtp_close($handle)
    {
       
fclose($handle);
    }
?>
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0
richardaburton at hotmail dot com
10 years ago
Improved HTTP/1.1 chunked transfer-encoding example.

The sample code given below by Jack does not function correctly when run against a recent version of Apache (I'm assuming that this did once work, but from the HTTP/1.1 spec I can only assume if it did work it was based mostly on luck).

<?php

$header
= "";
$response = "";

// connect
if (!($request=fsockopen('example.com',80,$errno,$errstr))) exit($errstr);
else {
  
socket_set_timeout($request,10);
  
// send request
  
fwrite($request,$post);
  
// get header
  
do $header.=fread($request,1); while (!preg_match('/\\r\\n\\r\\n$/',$header));
  
// check for chunked encoding
  
if (preg_match('/Transfer\\-Encoding:\\s+chunked\\r\\n/',$header))
      do {
        
$byte = "";
        
$chunk_size="";
         do {
           
$chunk_size.=$byte;
           
$byte=fread($request,1);
         } while (
$byte!="\\r");      // till we match the CR
        
fread($request, 1);         // also drop off the LF
        
$chunk_size=hexdec($chunk_size); // convert to real number
        
$response.=fread($request,$chunk_size);
        
fread($request,2);          // ditch the CRLF that trails the chunk
     
} while ($chunk_size);         // till we reach the 0 length chunk (end marker)
  
else {
     
// check for specified content length
     
if (preg_match('/Content\\-Length:\\s+([0-9]*)\\r\\n/',$header,$matches)) {
        
$response=fread($request,$matches[1]);
      } else {
        
// not a nice way to do it (may also result in extra CRLF which trails the real content???)
        
while (!feof($request)) $response .= fread($request, 4096);
      }
   }
  
// close connection
  
fclose($request);
}

// do something useful with the response
print($header);
print(
$response);

?>

Richard.
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0
joe at edwardsconsultants dot com
10 years ago
just a quick note for users attempting https and thinking they must resort to curl or alternate methods -
you can use fsockopen, just read the docs closely.  basically they are saying to use 'ssl://' for a HTTPS (SSL) web request.

so this would work for authorize.net, and others; even for that paypal IPN - however I think it would be best to leave the site and deal with paypal's form:

<?php
$host
= "something.example.com";
$port = 443;
$path = "/the/url/path/file.php"; //or .dll, etc. for authnet, etc.

//you will need to setup an array of fields to post with
//then create the post string
$formdata = array ( "x_field" => "somevalue");
//build the post string
 
foreach($formdata AS $key => $val){
   
$poststring .= urlencode($key) . "=" . urlencode($val) . "&";
  }
// strip off trailing ampersand
$poststring = substr($poststring, 0, -1);

$fp = fsockopen("ssl://".$host, $port, $errno, $errstr, $timeout = 30);

if(!
$fp){
 
//error tell us
 
echo "$errstr ($errno)\n";
  
}else{

 
//send the server request
 
fputs($fp, "POST $path HTTP/1.1\r\n");
 
fputs($fp, "Host: $host\r\n");
 
fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
 
fputs($fp, "Content-length: ".strlen($poststring)."\r\n");
 
fputs($fp, "Connection: close\r\n\r\n");
 
fputs($fp, $poststring . "\r\n\r\n");

 
//loop through the response from the server
 
while(!feof($fp)) {
    echo
fgets($fp, 4096);
  }
 
//close fp - we are done with it
 
fclose($fp);
}
?>
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0
sergiopaternoster at tiscali dot it
10 years ago
If you want to connect via Telnet, it could be useful to set also the Terminal Type (some OS requires it)

<?php
$IAC 
= chr(255);   /* interpret as command: */
$SB = chr(250);     /* interpret as subnegotiation */
$SE = chr(240);     /* end sub negotiation */
$TELOPT_TTYPE = chr(24);     /* terminal type */
$TELQUAL_IS = chr(0);    /* Option is... */

//sending Terminal Type
fwrite($sock,$IAC.$SB.$TELOPT_TTYPE.$TELQUAL_IS.'vt100'.$IAC.$SE);
?>

ciao
Sergio Paternoster
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0
blazely at removetoemail netspace net au
10 years ago
Here's a quick function to establish a connection to a web server that will time out if the connection is lost after a user definable amount of time or if the server can't be reached.

Also supports Basic authentication if a username/password is specified. Any improvements or criticisms, please email me! :-)

Returns either a resource ID, an error code or 0 if the server can't be reached at all. Returns -1 in the event that something really wierd happens like a non-standard http response or something. Hope it helps someone.

Cheers,

Ben Blazely

<?php
function connectToURL($addr, $port, $path, $user="", $pass="", $timeout="30")
{
 
$urlHandle = fsockopen($addr, $port, $errno, $errstr, $timeout);
 if (
$urlHandle)
 {
 
socket_set_timeout($urlHandle, $timeout);
  if (
$path)
  {
  
$urlString = "GET $path HTTP/1.0\r\nHost: $addr\r\nConnection: Keep-Alive\r\nUser-Agent: MyURLGrabber\r\n";
   if (
$user)
   
$urlString .= "Authorization: Basic ".base64_encode("$user:$pass")."\r\n";
   
$urlString .= "\r\n";

   
fputs($urlHandle, $urlString);

   
$response = fgets($urlHandle);

    if (
substr_count($response, "200 OK") > 0)      // Check the status of the link
   
{
    
$endHeader = false;                     // Strip initial header information
    
while ( !$endHeader)
     {
      if (
fgets($urlHandle) == "\r\n")
      
$endHeader = true;
     }

     return
$urlHandle;                      // All OK, return the file handle
   
}
    else if (
strlen($response) < 15)                // Cope with wierd non standard responses
   
{
    
fclose($urlHandle);
     return -
1;
    }
    else                                           
// Cope with a standard error response
   
{
    
fclose($urlHandle);
     return
substr($response,9,3);
    }
   }

   return
$urlHandle;
  }
  else
  {
   return
0;
  }
 }
}
?>
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0
Sherif Gayed
11 years ago
Here is how to connect to the web from behind a proxy server:

<?php
/*************start code**************/
/*your proxy server address*/
$proxy = "192.168.10.1";
/*your proxy server port*/
$port = 8080;
/*the url you want to connect to*/
$url = "http://www.php.net/";
$fp = fsockopen($proxy, $port);
fputs($fp, "GET $url HTTP/1.0\r\nHost: $proxy\r\n\r\n");
while(!
feof($fp)){
 
$line = fgets($fp, 4000);
  print(
$line);
}
fclose($fp);
/**************end code**************/
?>
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0
g dot bashi at ntlworld dot com
11 years ago
The timeout parameter was not supported under windows until PHP 4.3.0, previously it was fixed at 30sec.
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0
dan at lovepond dot com
11 years ago
Here is some code to help out abit more with the EOF problem.
I had a problem where I needed to strip out so many lines of server input to get back right data i wanted.

<?php
$port
=4000;
$host="localhost";
$message="test";
$status=senddata($host,$port,$message);
print
"$status";

function
senddata($host,$port,$message) {

#takes in account servers that do not return EOF character
#send data to server and get back input

#function globals
$linenumber="2"; #amount of lines to get rid of before we give input
$lineamount="1"; #amount of lines to read after we give input

$fp = fsockopen("$host", $port, $errno, $errstr, 30);
if (!
$fp) {
   echo
"$errstr ($errno)";
}
else {
   for (
$i = 1; $i < $linenumber+1; $i++) {
     
fread ($fp,1);
     
$bytes_left = socket_get_status($fp);
      if (
$bytes_left > 0) { fread($fp, $bytes_left[unread_bytes]); }
   }
  
fputs($fp, "$message\r\n");
   for (
$i = 1; $i < $lineamount+1; $i++) {
     
$status.=fread($fp,1);
     
$bytes_left = socket_get_status($fp);
      if (
$bytes_left > 0) { $status.=fread($fp, $bytes_left[unread_bytes]); }
   }
  
fclose ($fp);
}

return
$status;
}

?>
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0
iain at monitormedia dot co dot uk
11 years ago
Here's how to send an email using SMTP. This includes rudimentary checking on server responses during the process of sending an email. Could be improved by more comprehensive processing of the result codes...or going on to the next mail exchanger when you fail after connecting to the first.

<?php

function another_mail($to,$subject,$headers,$message)
{
 
// Could get this from the php ini?
 
$from="me@example.com";
 list(
$me,$mydomain) = split("@",$from);

 
// Now look up the mail exchangers for the recipient
 
list($user,$domain) = split("@",$to,2);
 if(
getmxrr($domain,$mx,$weight) == 0)  return FALSE;

 
// Try them in order of lowest weight first
 
array_multisort($mx,$weight);
 
$success=0;

 foreach(
$mx as $host) {
 
// Open an SMTP connection
 
$connection = fsockopen ($host, 25, $errno, $errstr, 1);
  if (!
$connection)
    continue;
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "220") break;

 
// Introduce ourselves
 
fputs($connection, "HELO $mydomain\n");
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "250") break;

 
// Envelope from
 
fputs($connection, "MAIL FROM: $from\n");
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "250") break;

 
// Envelope to
 
fputs($connection, "RCPT TO: $to\n");
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "250") break;

 
// The message
 
fputs($connection, "DATA\n");
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "354") break;

 
// Send To:, From:, Subject:, other headers, blank line, message, and finish
  // with a period on its own line.
 
fputs($connection, "To: $to\nFrom: $from\nSubject: $subject\n$headers\n\n$message\n.\n");
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "250") break;

 
// Say bye bye
 
fputs($connection,"QUIT\n");
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "221") break;

 
// It worked! So break out of the loop which tries all the mail exchangers.
 
$success=1;
  break;
 }
 
// Debug for if we fall over - uncomment as desired
 // print $success?"Mail sent":"Failure: $res\n";
 
if($connection) {
  if(
$success==0) fputs($connection, "QUIT\n");
 
fclose ($connection);
 }
 return
$success?TRUE:FALSE;
}

another_mail("recipient@example.com","My Subject","X-mailer: PHP Script\nX-another-header: Whatever","Test email body.\n\nNote if you actually put a period on a line\nby itself, the function will terminate prematurely.\n\nYou will get a partial email sent though.\n");
?>
up
-2
andypsv at rcdrugs dot com
4 years ago
look at this smart ssl/http fsockopen function as a good solution for dealing with things

<?php
function _get($type,$host,$port='80',$path='/',$data='') {
   
$_err = 'lib sockets::'.__FUNCTION__.'(): ';
    switch(
$type) { case 'http': $type = ''; case 'ssl': continue; default: die($_err.'bad $type'); } if(!ctype_digit($port)) die($_err.'bad port');
    if(!empty(
$data)) foreach($data AS $k => $v) $str .= urlencode($k).'='.urlencode($v).'&'; $str = substr($str,0,-1);
   
   
$fp = fsockopen($host,$port,$errno,$errstr,$timeout=30);
    if(!
$fp) die($_err.$errstr.$errno); else {
       
fputs($fp, "POST $path HTTP/1.1\r\n");
       
fputs($fp, "Host: $host\r\n");
       
fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
       
fputs($fp, "Content-length: ".strlen($str)."\r\n");
       
fputs($fp, "Connection: close\r\n\r\n");
       
fputs($fp, $str."\r\n\r\n");
       
        while(!
feof($fp)) $d .= fgets($fp,4096);
       
fclose($fp);
    } return
$d;
}
?>
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