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curl_version> <curl_setopt_array
Last updated: Sun, 25 Nov 2007

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curl_setopt

(PHP 4 >= 4.0.2, PHP 5)

curl_setopt — Nastaviť voľbu pre CURL prenos

Popis

bool curl_setopt ( resource $ch , string $voľba , mixed $hodnota )

Funkcia curl_setopt() nastaví voľby pre CURL sedenie indetifikované parametrom ch . Parameter voľba je voľba, ktorú chcete nastaviť a hodnota je hodnota voľby daná parametrom voľba .

hodnota by mala byť long pre následujúce voľby (určené v parametri voľba ):

  • CURLOPT_INFILESIZE : Keď uploadujete súbor na vzdialenú stránku, táto voľba by sa mala použiť, aby PHP povedala, aká bude očakávaná veľkosť súboru.
  • CURLOPT_VERBOSE : Nastavete túto voľbu na nenulovú hodnotu, ak chcete, aby CURL hlásil všetko, čo sa deje.
  • CURLOPT_HEADER : Nastavte túto voľbu na nenulovú hodnotu, ak chcete, aby bola hlavička zahrnutá vo výstupe.

  • CURLOPT_NOPROGRESS : Nastavnte túto voľbu na nenulovú hodnotu, ak nechcete, aby PHP zobrazovalo merač priebehu pre CURL prenosy.

    Note: PHP túto voľbu automaticky nastaví na nenulový parameter, mala by sa meniť len z dôvodu ladenia.

  • CURLOPT_NOBODY : Nastavte túto voľbu na nenulovú hodnotu, ak nechcete, aby bolo telo zahrnuté vo výstupe.
  • CURLOPT_FAILONERROR : Nastavte túto voľbu na nenulovú hodnotu, ak chcete, aby PHP zlyhalo potichu, ak vrátený HTTP kód je väčší než 300. Východzie nastavenie je vrátiť stránku normálne, ignorujúc kód.
  • CURLOPT_UPLOAD : Nastavte túto voľbu na nenulovú hodnotu, ak chcete, aby sa PHP pripravilo na uploadovanie.
  • CURLOPT_POST : Nastavte túto voľbu na nenulovú hodnotu, ak chcete, aby PHP robilo pravidelný HTTP POST. Tento POST je normálny application/x-www-form-urlencoded druh, najbežnejšie používaný HTML formulármi.
  • CURLOPT_FTPLISTONLY : Nastavte túto voľbu na nenulovú hodnotu a PHP urobí zoznam názvom FTP adresára.
  • CURLOPT_FTPAPPEND : Nastavte túto voľbu na nenulovú hodnotu a PHP pripojí k vzdialenému súboru namiesto jeho prepísania.
  • CURLOPT_NETRC : Nastavte túto voľbu na nenulovú hodnotu a PHP preskenuje váš ~./netrc súbor, aby našiel vaše užívateľské meno a heslo pre vzdialenú stránku, s ktorou vytvárate spojenie.
  • CURLOPT_FOLLOWLOCATION : Nastavte túto voľbu na nenulovú hodnotu, aby sa sledovali všetky hlavičky "Location: ", ktoré server posiela ako časť HTTP hlavičky (toto je rekurzívne, PHP bude sledovať toľko hlavičiek "Location: ", koľko sa ich pošle.)
  • CURLOPT_PUT : Nastavte túto voľbu na nenulovú hodnotu na súbor HTTP PUT. Súbor na PUT musí byť nastavený s CURLOPT_INFILE a CURLOPT_INFILESIZE.
  • CURLOPT_MUTE : Nastavte túto voľbu na nenulovú hodnotu a PHP bude úplne potichu vzhľadom na CURL funkcie.
  • CURLOPT_TIMEOUT : Vložte long ako parameter, ktorý obsahuje maximálny čas, v sekundách, čím povolíte CURL funkciám ich trvanie.
  • CURLOPT_LOW_SPEED_LIMIT : Vložte long ako parameter, ktorý obsahuje rýchlosť prenosu v bytoch za sekundu, pod ktorým by mal byť počas CURLOPT_LOW_SPEED_TIME sekúnd, aby PHP usúdilo, že je príliš pomalá a ukončí ho.
  • CURLOPT_LOW_SPEED_TIME : Vložte long ako parameter, ktorý obsahuje čas v sekundách, pod ktorým by prenos CURLOPT_LOW_SPEED_LIMIT mal byť, aby PHP usúdilo, že je príliš pomalá a ukončí ho.
  • CURLOPT_RESUME_FROM : Vložte long ako parameter, ktorý obsahuje offset, v bytoch, od ktorého chcete, aby prenos začal.
  • CURLOPT_SSLVERSION : Vložte long ako parameter, ktorý obsahuje SSL verziu (2 akebo 3), ktorá sa má použiť. Defaultne toto PHP vyskúša a určí samo, i keď v niektorých prípadoch to musíte nastaviť manuálne.
  • CURLOPT_SSL_VERIFYHOST : Vložte long, ak by mal CURL skontrolovať Bežný názov peer certifikátu v nadviazaní spojenia SSL. Hodnota 1 znamená, že by sme mali zistiť existenciu bežného názvu, hodnota 2 znamená, že by sme mali uistiť, že sa zhoduje s poskytnutým názvom hostu.
  • CURLOPT_TIMECONDITION : Vložte long ako parameter, ktorý určuje ako sa CURLOPT_TIMEVALUE spracuje. Tento parameter môžete nastaviť na TIMECOND_IFMODSINCE alebo TIMECOND_ISUNMODSINCE. Táto vlastnosť je iba pre HTTP.
  • CURLOPT_TIMEVALUE : Vložte long ako parameter, ktorý je čas v sekundách od 1. januára 1970. Čas sa použije ako je určené voľbou CURLOPT_TIMEVALUE alebo sa defaultne použije TIMECOND_IFMODSINCE.
  • CURLOPT_RETURNTRANSFER : Vložte nenulovú hodnotu, ak chcete, aby CURL priamo vracal prenos namiesto jeho priameho vytlačenia.

Parameter hodnota by mal byať reťazec pre následujúce hodnoty parametra voľba :

  • CURLOPT_URL : Toto je URL, ktorú chete, aby PHP stiahlo. Túto voľbu môžete tiež nastaviť pri inicializácii sedenia pomocou funkcie curl_init().
  • CURLOPT_USERPWD : Vložte reťazec formátovaný spôsobom [username]:[password], ktorý má PHP použiť pre spojenie.
  • CURLOPT_PROXYUSERPWD : Vložte reťazec vo formáte [username]:[password] pre spojenie na HTTP proxy.
  • CURLOPT_RANGE : Vložte špecifikovaný rozsah, aký chcete. Mal byť vo formáte "X-Y", kde sa X alebo Y može vynechať. HTTP prenosy tiež podporujú niekoľko intervalov, oddelené čiarkami ako v X-Y,N-M.
  • CURLOPT_POSTFIELDS : Vložte reťazec obsahujúci plné dáta na poslanie v HTTP "POST" operácii.
  • CURLOPT_REFERER : Vložte reťazec obsahujúci hlavičku "referer", ktorá sa má použiť v HTTP požiadavke.
  • CURLOPT_USERAGENT : Vložte reťazec obsahujúci hlavičku "user-agent", ktorá sa má použiť v HTTP požiadavke.
  • CURLOPT_FTPPORT : Vložte reťazec obsahujúci hodnotu, ktorá sa použije na získanie IP adresy na použie pre ftp "POST" inštrikciu. POST inštrikcia hovorí vzdialenému serveru, aby sa pripojil na našu špecifickú IP adresu. Reťazec môže byť planá IP adresa, názov hostu, názov rozhrania siete (pod UNIXom) alebo len '-' na použitie východzej IP adresy systému.
  • CURLOPT_COOKIE : Vložte reťazec obsahujúci obsah cookie, ktorý sa má nastaviť v HTTP hlavičke.
  • CURLOPT_SSLCERT : Vložte reťazec obsahujúci názvo súboru formatovaného PEM certifikátu.
  • CURLOPT_SSLCERTPASSWD : Vložte reťazec obsahujúci helso požadované na použitie CURLOPT_SSLCERT certifikátu.
  • CURLOPT_COOKIEFILE : Vložte reťazec obsahujúci názov súboru obsahujúci cookie dáta. Cookie súbor môže byť formátu Netscape alebo len plané hlavičky HTTP štýlu zapísané do súboru.

  • CURLOPT_CUSTOMREQUEST : Vložte reťazec, ktorý sa má použiť miesto GET alebo HEAD pri vykonávaní HTTP požiadavky. Je to užitočné pre DELETE alebo iných, neznámejších HTTP požiadaviek. Pletné hodnoty sú veci ako GET, POST atď; napr. nezadávajte sem celý riadok HTTP požiadavky. Napr. zadanie 'GET /index.html HTTP/1.0\r\n\r\n' by bolo nesprávne.

    Note: Nerobnte to bez predošlého uistenia sa, že váš server príkaz podporuje.

  • CURLOPT_PROXY : Zadajte názov HTTP proxy na pretunelovanie požiadavky.

  • CURLOPT_INTERFACE : Vložte názov odchádzajúceho rozhranie siete na použitie. To môže byť názov rozhrania, IP adresa alebo názov hostu.

  • CURLOPT_KRB4LEVEL : Vložte KRB4 (Kerberos 4) stupeň ochrany. Hocktorý z následujúcich reťazcov (v poradí od najslepšieho k najsilnejšiemu): 'clear', 'safe', 'confidential', 'private'. Ak sa reťazec nezhoduje s jedným z týchto, potom sa použije 'private'. Ak ho nastavíte na NULL, KRB47 ochrana sa zamietne. KRB4 ochrana momentálne pracuje iba s FTP transakciami.

  • CURLOPT_HTTPHEADER : Vložte pole HTTP polí hlavičiek, ktoré sa majú nastaviť.

  • CURLOPT_QUOTE : Vložte pole FTP príkazov na vykonanie na serveri pred FTP požiadavkou.

  • CURLOPT_POSTQUOTE : Vložte pole FTP príkazov na vykonanie na serveri, po tom, čo FTP požiadavka bola vykonaná.

Následujúce voľby vyžadujú kľúčové slovo súboru, ktorá sa získa pomocou funkcie fopen():

  • CURLOPT_FILE : Súbor, kde by sa mal uložiť výstup vášho prenosu, default je STDOUT.
  • CURLOPT_INFILE : Súbor, od kiaľ vstup prichádza vstup vášho prenosu.
  • CURLOPT_WRITEHEADER : Súbor, do ktorého sa zapíše časť s hlavičkou výstupu.
  • CURLOPT_STDERR : Súbor, do ktorého sa zapíšu chyby namiesto stderr.



curl_version> <curl_setopt_array
Last updated: Sun, 25 Nov 2007
 
add a note add a note User Contributed Notes
curl_setopt
ac at an dot y-co dot de
10-Jul-2008 10:08
If you want to connect to a server which requires that you identify yourself with a certificate, use following code. Your certificate and servers certificate are signed by an authority whose certificate is in ca.ctr.

<?php
curl_setopt($ch, CURLOPT_VERBOSE, '1');
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, '1');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, '1');
curl_setopt($ch, CURLOPT_CAINFO,  getcwd().'/cert/ca.crt');
curl_setopt($ch, CURLOPT_SSLCERT, getcwd().'/cert/mycert.pem');
curl_setopt($ch, CURLOPT_SSLCERTPASSWD, 'password');
?>

If your original certificate is in .pfx format, you have to convert it to .pem using following commands
# openssl pkcs12 -in mycert.pfx -out mycert.key
# openssl rsa -in mycert.key -out mycert.pem
# openssl x509 -in mycert.key >> mycert.pem
nick at glype dot com
07-Jul-2008 09:18
Although CURLOPT_CLOSEPOLICY and the applicable choices are valid constants, setting this option with curl_setopt() always returns false. A quick google search suggests the option is deprecated and/or never worked.
heron at xnapid dot com
19-Jun-2008 02:19
Someone posted this under tmpfile (http://us3.php.net/manual/en/function.tmpfile.php#69419), and I thought it was particularly useful:

By the way, this function is really useful for libcurl's CURLOPT_PUT feature if what you're trying to PUT is a string.   For example:

/* Create a cURL handle. */
$ch = curl_init();

/* Prepare the data for HTTP PUT. */
$putString = "Hello, world!";
$putData = tmpfile();
fwrite($putData, $putString);
fseek($putData, 0);

/* Set cURL options. */
curl_setopt($ch, CURLOPT_URL, "http://www.example.com");
curl_setopt($ch, CURLOPT_PUT, true);
curl_setopt($ch, CURLOPT_INFILE, $putData);
curl_setopt($ch, CURLOPT_INFILESIZE, strlen($putString));
/* ... (other curl options) ... */

/* Execute the PUT and clean up */
$result = curl_exec($ch);
fclose($putData);
curl_close($ch);
Salil Kothadia
19-Jun-2008 09:02
In PHP5, for the "CURLOPT_POSTFIELDS" option, we can use:

<?php
$ch = curl_init($URI);
$Post = http_build_query($PostData);
curl_setopt($ch, CURLOPT_POSTFIELDS, $Post);
$Output = curl_exec($ch);
curl_close($ch);
?>
chaim1567 at googlemail dot com
09-Jun-2008 04:07
Be careful setting options while reusing a curl handle. I do not believe curl_exec resets the previous options e.g. the referrer and headers you set two requests ago may remain for the latest request.

I have not fully tested this and am interested in your results.
f00f
13-May-2008 12:17
Please note that the below is not entirely correct. This format will work partially, but does not always produce correct headers. The correct form for the same code is:
<?php
$str  = array(
"Accept-Language: en-us,en;q=0.5",
"Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7",
"Keep-Alive: 300",
"Connection: keep-alive"
);
      
curl_setopt($this->curl_handle, CURLOPT_HTTPHEADER, $str);
?>

The appropriate newlines/cr's *should* be handled by curl.

This realization has cost me many hours, because Host, User-Agent, Cache-Control, etc appear to be handled correctly with the string form, but Content-Length and Content-Type are duplicated and the second copy is not parsed correctly by the server!
hotrodder at rocketmail dot com
06-May-2008 06:26
I just spent the last 45 minutes banging my head against my keyboard because when using libcurl for a lighttpd server I would get a 400 Bad Request Error.

It turns out, that despite what has been mentioned in other comments, when using the CURLOPT_HTTPHEADER option, you must use \r\n as newline separators for each header NOT \n. For some reason lighttpd will not accept them. Other webservers will however.

Example:
<?php
$str  = "Accept-Language: en-us,en;q=0.5\r\n";
$str .= "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n";
$str .= "Keep-Alive: 300\r\n";
$str .= "Connection: keep-alive\r\n";
       
curl_setopt($this->curl_handle, CURLOPT_HTTPHEADER, array($str));
?>
skylight at list ru
30-Apr-2008 02:31
OMG! I've joust found kinda bug:
YES, you can set an IP for curl to use by using this statement: curl_setopt($curl, CURLOPT_INTERFACE, $ip);
NO, you CAN NOT set another IP for the same curl object. I mean if u do curl_setopt($curl, CURLOPT_INTERFACE, $ip2); - it wont work!

So to change an IP you need to re-create curl object (curl_close, then curl_init).
sgamon at yahoo dot com
09-Apr-2008 05:55
If you are doing a POST, and the content length is 1,025 or greater, then curl exploits a feature of http 1.1: 100 (Continue) Status.

See http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.2.3

* it adds a header, "Expect: 100-continue". 
* it then sends the request head, waits for a 100 response code, then sends the content

Not all web servers support this though.  Various errors are returned depending on the server.  If this happens to you, suppress the "Expect" header with this command:

<?php
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Expect:'));
?>

See http://www.gnegg.ch/2007/02/the-return-of-except-100-continue/
john factorial
04-Apr-2008 09:22
Clarification for the CURLOPT_NOBODY option: by excluding the body from your request, you're effectively making a HEAD request. Use the CURLOPT_NOBODY option to return only the headers in the remote response.

Example:

function check_url($url) {
    $c = curl_init();
    curl_setopt($c, CURLOPT_URL, $url);
    curl_setopt($c, CURLOPT_HEADER, 1); // get the header
    curl_setopt($c, CURLOPT_NOBODY, 1); // and *only* get the header
    curl_setopt($c, CURLOPT_RETURNTRANSFER, 1); // get the response as a string from curl_exec(), rather than echoing it
    curl_setopt($c, CURLOPT_FRESH_CONNECT, 1); // don't use a cached version of the url
    if (!curl_exec($c)) { return false; }

    $httpcode = curl_getinfo($c, CURLINFO_HTTP_CODE);
    return ($httpcode < 400);
}
mavook at gmail dot com
15-Feb-2008 10:26
If you try to upload file to a server, you need do CURLOPT_POST first and then fill CURLOPT_POSTFIELDS.
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postvars);
^^ This will post multipart/form-data

Next example don't work:
curl_setopt($ch, CURLOPT_POSTFIELDS, $postvars);
curl_setopt($ch, CURLOPT_POST, 1);
Sets to content-lenght:0 if $postvars an array.
meat_popsiclez at hotmail dot com
28-Dec-2007 09:13
Despite the documentation for CURLOPT_HTTPHEADER, all header fields MUST be in one string, with a eol indicator, inside a single element array, in my experience.

For example, this will fail.
<?php
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Range: Bytes=0-50"));
?>

This will work.
<?php
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Range: Bytes=0-50\n"));
?>

This will only set the first header
<?php
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Range: Bytes=0-50\n","Otherheader: stuff\n"));
?>

This however, will set both headers as we want.
<?php
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Range: Bytes=0-50\nOtherheader: stuff\n"));
?>
contacto at hardcode dot com dot ar
12-Dec-2007 12:34
hey hey hey!
the problem: curl_setopt($ch,FOLLOW_LOCATION,1);
the error: trouble with open_basedir and safe_mode
the solution: a function already developed by someone
the solution n 2: the same function, modifed, works great for me..

function curl_redir_exec($ch,$debug="")
{
    static $curl_loops = 0;
    static $curl_max_loops = 20;

    if ($curl_loops++ >= $curl_max_loops)
    {
        $curl_loops = 0;
        return FALSE;
    }
    curl_setopt($ch, CURLOPT_HEADER, true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $data = curl_exec($ch);
    $debbbb = $data;
    list($header, $data) = explode("\n\n", $data, 2);
    $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);

    if ($http_code == 301 || $http_code == 302) {
        $matches = array();
        preg_match('/Location:(.*?)\n/', $header, $matches);
        $url = @parse_url(trim(array_pop($matches)));
        //print_r($url);
        if (!$url)
        {
            //couldn't process the url to redirect to
            $curl_loops = 0;
            return $data;
        }
        $last_url = parse_url(curl_getinfo($ch, CURLINFO_EFFECTIVE_URL));
    /*    if (!$url['scheme'])
            $url['scheme'] = $last_url['scheme'];
        if (!$url['host'])
            $url['host'] = $last_url['host'];
        if (!$url['path'])
            $url['path'] = $last_url['path'];*/
        $new_url = $url['scheme'] . '://' . $url['host'] . $url['path'] . ($url['query']?'?'.$url['query']:'');
        curl_setopt($ch, CURLOPT_URL, $new_url);
    //    debug('Redirecting to', $new_url);

        return curl_redir_exec($ch);
    } else {
        $curl_loops=0;
        return $debbbb;
    }
}

just use this function without de FOLLOW_LOCATION and should work. the problem was that when you get to the line where you return the data if http_code was different than 301 oe 302, $data has obsolete information or none. so $debbbb does the job.

hope this helps someone out there

thanks from argentina
andrabr at gmail dot com
20-Aug-2007 02:03
This is very clear in hindsight, but it still cost me several hours:

 curl_setopt($session, CURLOPT_HTTPPROXYTUNNEL, 1);

means that you will tunnel THROUGH the proxy, as in "your communications will go as if the proxy is NOT THERE".

Why do you care? - Well, if you are trying to use, say, Paros, to debug HTTP between your cURL and the server, with CURLOPT_HTTPPROXYTUNNEL set to TRUE Paros will not see or log your traffic thus defeating the purpose and driving you nuts.

There are other cases, of course, where this option is extremely useful...
chuck
20-Jul-2007 09:07
The explanation of CURLOPT_NOBODY ("TRUE to exclude the body from the output.") seems unclear to me -- I originally read "output" to mean the return value, i.e. the response.  In fact it means to exclude the body from your *request*.  Not sure whether "output" means the same thing for CURLOPT_HEADER though.
michael sky
05-Jul-2007 03:09
if you are trying to connect to 'https://...' and after that want to work with POST data - that's the way:

$curl = curl_init();
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($curl, CURLOPT_HEADER, 0);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)");
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($curl, CURLOPT_COOKIEFILE, "cookiefile");
curl_setopt($curl, CURLOPT_COOKIEJAR, "cookiefile"); # SAME cookiefile
curl_setopt($curl, CURLOPT_URL, "url1"); # this is where you first time connect - GET method authorization in my case, if you have POST - need to edit code a bit
$xxx = curl_exec($curl);

curl_setopt($curl, CURLOPT_URL, "url2"); # this is where you are requesting POST-method form results (working with secure connection using cookies after auth)
curl_setopt($curl, CURLOPT_POSTFIELDS, "var1=value&var2=value&var3=value&"); # form params that'll be used to get form results
$xxx = curl_exec($curl);

curl_close ($curl);
echo $xxx;
sleepwalker at rahulsjohari dot com
27-Jun-2007 11:18
Two things that I noted, one of which has been mentioned earlier, if you are connecting to an SSL site (https) and don't have the appropriate certificate, don't forget to set CURLOPT_SSL_VERIFYPEER as "false"... it's set to "true" by default. Scratched my head over 2 hours to figure this one out as I had a machine with an older version installed and everything worked fine without using this option on that one - but failed on other machines with newer versions.

Second very important thing, I've never had my scripts work (tried on various machines, multiple platforms) with a Relative path to a COOKIEJAR or COOKIEFILE. In my experience I HAVE to specify the absolute path and not the relative path.

Small script I wrote to connect to a page, gather all cookies into a jar, connect to another page to login, taking the cookiejar with you for authentication:

$ch = curl_init();
curl_setopt($ch, CURLOPT_COOKIEJAR, "/Library/WebServer/Documents/tmp/cookieFileName");
curl_setopt($ch, CURLOPT_URL,"https://www.example.com/myaccount/start.asp");
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
ob_start();      // Prevent output
curl_exec ($ch);
ob_end_clean();  // End preventing output
curl_close ($ch);
unset($ch);

$ch = curl_init();
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "field1=".$f1."&field2=".$f2."&SomeFlag=True");
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_COOKIEFILE, "/Library/WebServer/Documents/tmp/cookieFileName");
curl_setopt($ch, CURLOPT_URL,"https://www.example.com/myaccount/Login.asp");
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
$result = curl_exec ($ch);
curl_close ($ch);
mcbreen at gmail dot com
12-Jun-2007 02:35
If you are getting the following error:

SSL: certificate subject name 'domain-or-ip-1.com' does not match target host name 'domain-or-ip-2.com'

Then you can set the following option to get around it:

curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
vincent at ludden dot nl
12-Jun-2007 01:55
Please note that the CURLOPT_INTERFACE setting only accepts IP addresses and hostnames of the local machine. It is not meant to send a URL to a specific IP address.
Jon Freilich
11-May-2007 09:52
curl will sometimes return an "Empty reply from server" error if you don't send a User-Agent string.  Use the CURLOPT_USERAGENT option.
rob at infoglobe dot net
24-Apr-2007 09:01
Options not included in the above, but that work (Taken from the libcurl.a C documentation)

CURLOPT_FTP_SSL

Pass a long using one of the values from below, to make libcurl use your desired level of SSL for the ftp transfer. (Added in 7.11.0)

CURLFTPSSL_NONE

Don't attempt to use SSL.

CURLFTPSSL_TRY

Try using SSL, proceed as normal otherwise.

CURLFTPSSL_CONTROL

Require SSL for the control connection or fail with CURLE_FTP_SSL_FAILED.

CURLFTPSSL_ALL

Require SSL for all communication or fail with CURLE_FTP_SSL_FAILED.
alfredoaguirre dot v at gmail dot com
13-Mar-2007 05:26
Seems that CURLOPT_RETURNTRANSFER Option set to TRUE, returns a "1" when the transaction returns a blank page.

I think is for eliminate the FALSE to can be with a blank page as return
paczor
08-Mar-2007 06:50
How to get rid of response after POST: just add callback function for returned data (CURLOPT_WRITEFUNCTION) and make this function empty.

function curlHeaderCallback($ch, $strHeader) {
}
curl_setopt($ch, CURLOPT_WRITEFUNCTION, 'curlHeaderCallback')
Killerwhile
03-Mar-2007 06:36
In response to "brett at brettbrewer dot com" and Jamolkhon, the fact you don't take into account is when a redirection (Location: ...) occurs, all the headers are given so the \r\n\r\n can also separate twp consecutive headers.

An even better trick to get the header is to use CURLINFO_HEADER_SIZE :

$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);

$headers = substr($output, 0, $header_size - 4);
$body = substr($output, $header_size);

Then $headers contains all the headers.
Jamolkhon
15-Dec-2006 11:11
in response to "brett at brettbrewer dot com":
another useful way of getting headers without using regular expression

<?php

class CCurl {
    var $m_handle;
    var $m_header;
    var $m_body;
   
    function CCurl($sUrl) {
        $this->m_handle = curl_init();
        curl_setopt($this->m_handle, CURLOPT_URL, $sUrl);
        curl_setopt($this->m_handle, CURLOPT_HEADER, 1);
        curl_setopt($this->m_handle, CURLOPT_RETURNTRANSFER, 1);
        return;
    }
   
    function getHeader() {
        return $this->m_header;
    }
   
    function execute() {
        $sResponse = curl_exec($this->m_handle);
        $this->m_body = substr($sResponse, strpos($sResponse, "\r\n\r\n") + 4);
        $this->m_header = substr($sResponse, 0, -strlen($this->m_body));
        return $this->m_body;
    }
   
    function close() {
        curl_close($this->m_handle);
        return;
    }
}

?>

(you can add something or make some changes to suit your needs)
eion at bigfoot dot com
21-Nov-2006 08:40
If you are trying to use CURLOPT_FOLLOWLOCATION and you get this warning:
Warning: curl_setopt() [function.curl-setopt]: CURLOPT_FOLLOWLOCATION cannot be activated when in safe_mode or an open_basedir is set...

then you will want to read http://www.php.net/ChangeLog-4.php which says "Disabled CURLOPT_FOLLOWLOCATION in curl when open_basedir or safe_mode are enabled." as of PHP 4.4.4/5.1.5.  This is due to the fact that curl is not part of PHP and doesn't know the values of open_basedir or safe_mode, so you could comprimise your webserver operating in safe_mode by redirecting (using header('Location: ...')) to "file://" urls, which curl would have gladly retrieved.

Until the curl extension is changed in PHP or curl (if it ever will) to deal with "Location:" headers, here is a far from perfect remake of the curl_exec function that I am using.

Since there's no curl_getopt function equivalent, you'll have to tweak the function to make it work for your specific use.  As it is here, it returns the body of the response and not the header.  It also doesn't deal with redirection urls with username and passwords in them.

<?php
    function curl_redir_exec($ch)
    {
        static $curl_loops = 0;
        static $curl_max_loops = 20;
        if ($curl_loops++ >= $curl_max_loops)
        {
            $curl_loops = 0;
            return FALSE;
        }
        curl_setopt($ch, CURLOPT_HEADER, true);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $data = curl_exec($ch);
        list($header, $data) = explode("\n\n", $data, 2);
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        if ($http_code == 301 || $http_code == 302)
        {
            $matches = array();
            preg_match('/Location:(.*?)\n/', $header, $matches);
            $url = @parse_url(trim(array_pop($matches)));
            if (!$url)
            {
                //couldn't process the url to redirect to
                $curl_loops = 0;
                return $data;
            }
            $last_url = parse_url(curl_getinfo($ch, CURLINFO_EFFECTIVE_URL));
            if (!$url['scheme'])
                $url['scheme'] = $last_url['scheme'];
            if (!$url['host'])
                $url['host'] = $last_url['host'];
            if (!$url['path'])
                $url['path'] = $last_url['path'];
            $new_url = $url['scheme'] . '://' . $url['host'] . $url['path'] . ($url['query']?'?'.$url['query']:'');
            curl_setopt($ch, CURLOPT_URL, $new_url);
            debug('Redirecting to', $new_url);
            return curl_redir_exec($ch);
        } else {
            $curl_loops=0;
            return $data;
        }
    }
?>
jochem AT hotmail dot com
09-Nov-2006 11:27
I have seen two posts complaining the "CURLOPT_POSTFIELDS" option is not working well.

This was the solution given below:

   $o="";
   foreach ($post_data as $k=>$v)
   {
       $o.= "$k=".utf8_encode($v)."&";
   }
   $post_data=substr($o,0,-1);

The assumption that this is an error is not true, as stated on http://curl.rtin.bz/docs/httpscripting.html:
"  The data you send to the server MUST already be properly encoded, curl will
  not do that for you. For example, if you want the data to contain a space,
  you need to replace that space with %20 etc. Failing to comply with this
  will most likely cause your data to be received wrongly and messed up."

This means you do really have to encode the data yourself the right way.
zarko at svetlozar dot net
01-Oct-2006 04:51
As Yevgen mentioned earlier sometimes we can't use CURLOPT_COOKIEJAR and CURLOPT_COOKIEFILE. Below is a header callback function I wrote back in January that lets you maintain cookies between cURL requests. Cookies are added to $ch during all requests even during redirection, so you can use it together with CURLOPT_FOLLOWLOCATION.
Here is the code:

function read_header($ch, $string)
{
    global $location; #keep track of location/redirects
    global $cookiearr; #store cookies here
    global $ch;
       # ^overrides the function param $ch
       # this is okay because we need to
       # update the global $ch with
       # new cookies
   
    $length = strlen($string);
    if(!strncmp($string, "Location:", 9))
    { #keep track of last redirect
      $location = trim(substr($string, 9, -1));
    }
    if(!strncmp($string, "Set-Cookie:", 11))
    { #get the cookie
      $cookiestr = trim(substr($string, 11, -1));
      $cookie = explode(';', $cookiestr);
      $cookie = explode('=', $cookie[0]);
      $cookiename = trim(array_shift($cookie));
      $cookiearr[$cookiename] = trim(implode('=', $cookie));
    }
    $cookie = "";
    if(trim($string) == "")
    {  #execute only at end of header
      foreach ($cookiearr as $key=>$value)
      {
        $cookie .= "$key=$value; ";
      }
      curl_setopt($ch, CURLOPT_COOKIE, $cookie);
    }

    return $length;
}

Using the header function with curl (add this before curl_exec):

#don't forget globals, especially if you are using this in function
curl_setopt($ch, CURLOPT_HEADERFUNCTION, 'read_header');

This code assumes that you will reuse $ch without initializing it every time (call curl_init only once, in the beginning). If you need to initialize $ch again at any point in your code you can access the currently stored cookies in $cookiearr and include them in the new $ch.

I wrote this function before I had enough experience with regular expressions so you won't find any preg_match calls here. I have used this code for quite a while and without any problems accessing gmail, yahoo, hotmail, aol etc. where I had to go through login and a few pages before getting to what I was looking for.

Svetlozar Petrov (http://svetlozar.net)
php at miggy dot org
23-Aug-2006 10:35
Note that if you want to use a proxy and use it as a _cache_, you'll have to do:

curl_setopt($ch, CURLOPT_HTTPHEADER, array("Pragma: "));

else by default Curl puts a "Pragma: no-cache" header in and thus force cache misses for all requests.
bendavis78 at gmail dot com
13-Jul-2006 03:58
You can use CURLOPT_HEADERFUNCTION  with a callback inside an object.  This makes is it easy to capture the headers for later use.  For example:
<?
class Test
{
    public $headers;

    //...

    public function exec($opts)
    {
        $this->headers = array();
        $opts[CURLOPT_HEADERFUNCTION] = array($this, '_setHeader');
        $ch = curl_init();
        curl_setopt_array($ch, $opts);
        return curl_exec($ch);
    }

    private function _setHeader($ch, $header)
    {
        $this->headers[] = $header;
        return strlen($header);
    }

   
}

$test = new Test();
$opts = array(
   //... your curl opts here
);
$data = $test->exec($opts);
print_r($test->headers);
?>

...something like that

(This works in php v. 5.1.4)
Philippe dot Jausions at 11abacus dot com
30-May-2006 11:31
Clarification on the callback methods:

- CURLOPT_HEADERFUNCTION is for handling header lines received *in the response*,
- CURLOPT_WRITEFUNCTION is for handling data received *from the response*,
- CURLOPT_READFUNCTION is for handling data passed along *in the request*.

The callback "string" can be any callable function, that includes the array(&$obj, 'someMethodName') format.

 -Philippe
mr at coder dot tv
14-Apr-2006 07:22
Sometimes you can't use CURLOPT_COOKIEJAR and CURLOPT_COOKIEFILE becoz of the server php-settings(They say u may grab any files from server using these options). Here is the solution
1)Don't use CURLOPT_FOLLOWLOCATION
2)Use curl_setopt($ch, CURLOPT_HEADER, 1)
3)Grab from the header cookies like this:
preg_match_all('|Set-Cookie: (.*);|U', $content, $results);   
$cookies = implode(';', $results[1]);
4)Set them using curl_setopt($ch, CURLOPT_COOKIE,  $cookies);

Good Luck, Yevgen
giunta dot gaetano at sea-aeroportimilano dot it
27-Mar-2006 02:59
- CURLOPT-HTTPAUTH is defined in php 4.4.2 9and maybe lower), even tough the manual says php 5.0 only...

- it is not clear from the manual what kind of http auth is carried out by default if user specifies username/pwd: it is BASIC auth

ps: note to manual writers: the version info on this page always looks a bit inaccurate, especially regarding the php version where a given option first appeared...
Dustin Hawkins
27-Dec-2005 02:24
To further expand upon use of CURLOPT_CAPATH and CURLOPT_CAINFO...

In my case I wanted to prevent curl from talking to any HTTPS server except my own using a self signed certificate. To do this, you'll need openssl installed and access to the HTTPS Server Certificate (server.crt by default on apache)

You can then use a command simiar to this to translate your apache certificate into one that curl likes.

$ openssl x509 -in server.crt -out outcert.pem -text

Then set CURLOPT_CAINFO equal to the the full path to outcert.pem and turn on CURLOPT_SSL_VERIFYPEER.

If you want to use the CURLOPT_CAPATH option, you should create a directory for all the valid certificates you have created, then use the c_rehash script that is included with openssl to "prepare" the directory.

If you dont use the c_rehash utility, curl will ignore any file in the directory you set.
skyogre __at__ yandex __dot__ ru
22-Dec-2005 02:13
There is really a problem of transmitting $_POST data with curl in php 4+ at least.
I improved the encoding function by Alejandro Moreno to work properly with mulltidimensional arrays.

<?php
function data_encode($data, $keyprefix = "", $keypostfix = "") {
  assert( is_array($data) );
  $vars=null;
  foreach($data as $key=>$value) {
    if(is_array($value)) $vars .= data_encode($value, $keyprefix.$key.$keypostfix.urlencode("["), urlencode("]"));
    else $vars .= $keyprefix.$key.$keypostfix."=".urlencode($value)."&";
  }
  return $vars;
}

curl_setopt($ch, CURLOPT_POSTFIELDS, substr(data_encode($_POST), 0, -1) );

?>
phpnet at wafflehouse dot de
23-Oct-2005 06:34
Resetting CURLOPT_FILE to STDOUT won't work by calling curl_setopt() with the STDOUT constant or a php://output stream handle (at least I get error messages when trying the code from phpnet at andywaite dot com). Instead, one can simply reset it as a side effect of CURLOPT_RETURNTRANSFER. Just say

        curl_setopt($this->curl,CURLOPT_RETURNTRANSFER,0);

and following calls to curl_exec() will output to STDOUT again.
webmaster () stauceni.com
20-Oct-2005 01:42
A little mistake, that took a half-day to fix it:
When specifing CURLOPT_COOKIEFILE or CURLOPT_COOKIEJAR options, don't forget to "chmod 777" that directory where cookie-file must be created.
mcknight at chek dot com
22-Aug-2005 08:10
when specifing the file for either CURLOPT_COOKIEFILE or CURLOPT_COOKIEJAR you may need to use the full file path instead of just the relative path.
phpnet at andywaite dot com
07-Jun-2005 02:08
After setting CURLOPT_FILE, you may want want to revert back to the normal behaviour of displaying the results. This can be achieved using:

$fp = fopen ("php://output", "w") or die("Unable to open stdout for writing.\n");
curl_setopt($ch, CURLOPT_FILE, $fp);
ikendra at yken dot nospam dot org
09-May-2005 09:26
Using cURL, I needed to call a third-party script which was returning binary data as attachment to pass on retrieved data again as attachment.

Problem was that the third-party script occassionally returned HTTP errors and I wanted to avoid passing on zero-length attachment in such case.

Combination of using CURLOPT_FAILONERROR and CURLOPT_HEADERFUNCTION callback helped to process the third-party script HTTP errors neatly:

<?
function curlHeaderCallback($resURL, $strHeader) {
    if (preg_match('/^HTTP/i', $strHeader)) {
        header($strHeader);
        header('Content-Disposition: attachment; filename="file-name.zip"');
    }
    return strlen($strHeader);
}

$strURL = 'http://www.somesite.com/script-whichs-dumps-binary-attachment.php';

$resURL = curl_init();
curl_setopt($resURL, CURLOPT_URL, $strURL);
curl_setopt($resURL, CURLOPT_BINARYTRANSFER, 1);
curl_setopt($resURL, CURLOPT_HEADERFUNCTION, 'curlHeaderCallback');
curl_setopt($resURL, CURLOPT_FAILONERROR, 1);

curl_exec ($resURL);

$intReturnCode = curl_getinfo($resURL, CURLINFO_HTTP_CODE);
curl_close ($resURL);

if ($intReturnCode != 200) {
    print 'was error: ' . $intReturnCode;
}
?>
ale at desarrolloweburuguay dot com
05-May-2005 05:00
I don't know if in PHP 5+ this problem is solved, but, when I send via POST using CURLOPT_POSTFIELDS some times it doesnt work an associative array as parameter... and, if I need to send non-ascii characters (like ,,,,etc..) this problem appears too.
The solution is to encode in a unique string all the post key=>values

Possibly this code doesnt work:

<?php

    $post_data = array();
    $post_data['var1'] = "Diseo web uruguay";
    $post_data['var2'] = "Other string";
    $url = "http://www.someurl.com/";

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_URL, );   
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
    $result = curl_exec($ch);

?>

But this works:
<?php

    $post_data = array();
    $post_data['var1'] = "Diseo web uruguay";
    $post_data['var2'] = "Other string";
    $url = "http://www.someurl.com/";

    $o="";
    foreach ($post_data as $k=>$v)
    {
        $o.= "$k=".utf8_encode($v)."&";
    }
    $post_data=substr($o,0,-1);
   
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_URL, );   
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
    $result = curl_exec($ch);

?>

Rgds.
Alejandro Moreno.-
azcappy at azcappy dot com
23-Mar-2005 10:03
AZAds is a traffic exchange that we wrote. We wanted to come up with a way to check the UP or DOWN status of a submitted URL. Here is the solution we came up with. Can also be used for a site monitoring service.

<?
$uServer="$url";
@$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "$uServer");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
@curl_exec($ch);
$errnum=curl_errno($ch);
@curl_close($ch);
if($errnum != "0") {
     print "Remote Site Status: DOWN";
} else {
     print "Remote Site Status: UP";
}
?>

Simply feed the URL to be tested into $url. The code will check the site and return the error code if there is one and display to appropriate message.

Hope this is useful.

Keith
www.azads.net
mcknight at chek dot com
21-Feb-2005 09:38
Another way to automate a login process and store multiple cookies for additional transfers.

(The easiest way is probably just to use CURLOPT_COOKIEJAR and CURLOPT_COOKIEFILE and save them to a file. But if you need to change those cookie values or add/delete them then you can use the code below to set them.)

Continuing with Paul Ebermann's parsing function.
 function parse_response($this_response)
    {
    // Split response into header and body sections
    list($response_headers, $response_body) = explode("\r\n\r\n", $this_response, 2);
    $response_header_lines = explode("\r\n", $response_headers);

    // First line of headers is the HTTP response code
    $http_response_line = array_shift($response_header_lines);
    if(preg_match('@^HTTP/[0-9]\.[0-9] ([0-9]{3})@',$http_response_line, $matches)) { $response_code = $matches[1]; }

    // put the rest of the headers in an array
    $response_header_array = array();
    foreach($response_header_lines as $header_line)
        {
        list($header,$value) = explode(': ', $header_line, 2);
        $response_header_array[$header] .= $value."\n";
        }

    return array("code" => $response_code, "header" => $response_header_array, "body" => $response_body);
    }

// Do transfer, and make sure to include header in response
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "[login process]");
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec($ch);
curl_close($ch);

// Parse the response message
$response = parse_response($response);

// Create the basic header
$this_header = array(
    "MIME-Version: 1.0",
    "Content-type: text/html; charset=iso-8859-1",
    "Content-transfer-encoding: text"
);

// Add each cookie that has been returned in the response
// If cookies need to be added/deleted or value changed, then add code here
$cookies = explode("\n", $response["header"]["Set-Cookie"]);
foreach($cookies as $this_cookie) { array_push($this_header, "Cookie: ".$this_cookie); }

// Next set of transfers
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "[new transfer]");
curl_setopt($ch, CURLOPT_HTTPHEADER, $this_header);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec($ch);
curl_close($ch);
Aaron Stephanic
10-Nov-2004 09:51
The parse_response code below does not return multiple cookies as the value of 'Set-Cookie' if multiple cookies are set by the server.  It appears to only return the last cookie set.
Yura Pylypenko (plyrvt at mail dot ru)
08-Oct-2004 02:10
Each example of CURLOPT_POSTFIELDS in these comments has missing urlencode() on variable values. This should be applied according to RFC1738

<?php
$vars=null;
foreach($data as $key=>$value)
 if($key && $value)
  $vars.=$key."=".urlencode($value)."&";
?>
raul at navenetworks dot com
21-Jul-2004 01:19
Hi!

I have found some information I am sure it could help lot of programmers when they want to connect with curl to any https website and they haven't a good or right CA Cert :)

I give you just one example It has resolved me 2 hours of my time looking for a solution.

It is simple, just if you get any error in the curl_exec (use curl_error(...) to see the error to trace it) add the next line and everything is solved:

(note: replace $ch with the right curl variable)

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);

<?php

$ch = curl_init();
$res= curl_setopt ($ch, CURLOPT_URL,"https://yoururl/cgi");

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt ($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "Idc=si&");
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
$xyz = curl_exec ($ch);

curl_close ($ch);
echo $xyz;
if ($xyz == NULL) {
           echo "Error:<br>";
           echo curl_errno($ch) . " - " . curl_error($ch) . "<br>";
}
?>

I hope this helps.

Raul Mate Galan
Ceo Navenetworks Corp.

Note: Thanks to Ruben Lopez Gea for his help too.
ron at ttvavanti dot nl
07-May-2004 08:00
If you specify a CAINFO, note that the file must be in PEM format! (If not, it won't work).
Using Openssl you can use:
openssl x509 -in <cert> -inform d -outform PEM -out cert.pem
To create a pem formatted certificate from a binary certificate (the one you get if you download the ca somewhere).
brett at brettbrewer dot com
28-Apr-2004 07:48
I found it very annoying that cURL did not offer any easy way to extract the response headers. If you do

     curl_setopt($ch, CURLOPT_HEADER, 1);

then you only get the headers output inline with the rest of your response. Here's a nice little function to parse the cURL response when you use CURLOPT_HEADER.  I took it from an example on another site and turned it into a function. It assumes you're using CURLOPT_RETURNTRANSFER to return the response to some variable that is then passed to the function. You just pass it a curl_exec result and it returns the result parsed into an array with headers broken up into their correct parts.

<?php
function parse_response($response){
    /*
    ***original code extracted from examples at
    ***http://www.webreference.com/programming
                           /php/cookbook/chap11/1/3.html

    ***returns an array in the following format which varies depending on headers returned

        [0] => the HTTP error or response code such as 404
        [1] => Array
        (
            [Server] => Microsoft-IIS/5.0
            [Date] => Wed, 28 Apr 2004 23:29:20 GMT
            [X-Powered-By] => ASP.NET
            [Connection] => close
            [Set-Cookie] => COOKIESTUFF
            [Expires] => Thu, 01 Dec 1994 16:00:00 GMT
            [Content-Type] => text/html
            [Content-Length] => 4040
        )
        [2] => Response body (string)
*/

    list($response_headers,$response_body) = explode("\r\n\r\n",$response,2);
    $response_header_lines = explode("\r\n",$response_headers);

    // first line of headers is the HTTP response code
    $http_response_line = array_shift($response_header_lines);
    if (preg_match('@^HTTP/[0-9]\.[0-9] ([0-9]{3})@',$http_response_line,
                   $matches)) {
        $response_code = $matches[1];
    }

    // put the rest of the headers in an array
    $response_header_array = array();
    foreach ($response_header_lines as $header_line) {
        list($header,$value) = explode(': ',$header_line,2);
        $response_header_array[$header] = $value;
    }

    return array($response_code,$response_header_array,$response_body);
}
?>
Jakub Horky <jakub dot php at horky dot net>
04-Apr-2004 01:20
A bit more documentation (without minimum version numbers):

- CURLOPT_WRITEFUNCTION
- CURLOPT_HEADERFUNCTION
  Pass a function which will be called to write data or headers respectively. The callback function prototype:

long write_callback (resource ch, string data)

The ch argument is CURL session handle. The data argument is data received. Note that its size is variable. When writing data, as much data as possible will be returned in all invokes. When writing headers, exactly one complete header line is returned for better parsing.
The function must return number of bytes actually taken care of. If that amount differs from the amount passed to this function, an error will occur.

- CURLOPT_READFUNCTION
  Pass a function which will be called to read data. The callback function prototype:

string read_callback (resource ch, resource fd, long length)

The ch argument is CURL session handle. The fd argument is file descriptor passed to CURL by CURLOPT_INFILE option. The length argument is maximum length which can be returned.
The function must return string containing the data which were read. If length of the data is more than maximum length, it will be truncated to maximum length. Returning anything else than a string means an EOF.

[Note: there is more callbacks implemented in current cURL library but they aren't unfortunately implemented in php curl interface yet.]
tim dot php at ebw dot ca
18-Nov-2003 06:18
The page http://curl.haxx.se/libcurl/c/curl_easy_setopt.html at the cURL site has a list of all the CURLOPTS, including many not mentioned here. Also see http://curl.haxx.se/libcurl/php/examples/ for cURL examples in PHP.
me
14-May-2003 09:36
Just a reminder: When setting your CURLOPT_POSTFIELDS remember to replace the spaces in your values with %20
joeldegan AT yahoo.com
24-Feb-2003 01:38
Often times people ask about how to get data from secure servers.

Here is an example of getting the balance page from Paypal
<?
# script by Joel De Gan
# http://listbid.com

function GetCurlPage ($pageSpec) {
   
    $agent = "up.b";
    $header[] = "Accept: text/vnd.wap.wml,*.*";   
       $ch = curl_init($pageSpec);
      curl_setopt($ch,     CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch,     CURLOPT_VERBOSE, 1); ########### debug
    curl_setopt($ch,     CURLOPT_USERAGENT, $agent);
    curl_setopt ($ch,     CURLOPT_HTTPHEADER, $header);
    curl_setopt($ch,     CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch,     CURLOPT_COOKIEJAR, "cook");
    curl_setopt($ch,     CURLOPT_COOKIEFILE, "cook");
       $tmp = curl_exec ($ch);
       curl_close ($ch);
    return $tmp;
}
function PostCurlPage ($pageSpec, $data) {
   
    $agent = "up.b";
    $header[] = "Accept: text/vnd.wap.wml,*.*";   
       $ch = curl_init($pageSpec);
      curl_setopt($ch,     CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch,     CURLOPT_VERBOSE, 1); ########### debug
    curl_setopt($ch,     CURLOPT_USERAGENT, $agent);
    curl_setopt ($ch,     CURLOPT_HTTPHEADER, $header);
    curl_setopt($ch,     CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch,     CURLOPT_COOKIEJAR, "cook");
    curl_setopt($ch,     CURLOPT_COOKIEFILE, "cook");
    curl_setopt($ch,     CURLOPT_POST, 1);
    curl_setopt($ch,     CURLOPT_POSTFIELDS, $data);
   
       $tmp = curl_exec ($ch);
       curl_close ($ch);
    return $tmp;
}

$first = GetCurlPage("https://www.paypal.com/cgi-bin/phscr?cmd=login");
$exp = explode("=", $first);
$id = explode("\"", $exp[16]);

$second = PostCurlPage("https://www.paypal.com/cgi-bin/phscr?rs=".$id[0], "email=EMAIL@HOST.COM&pass=YOUR_PP_PASS&cmd=login-submit-pass");

echo $second."\n\n";
?>
yann dot corno at free dot fr
13-Nov-2002 04:19
About the CURLOPT_HTTPHEADER option, it took me some time to figure out how to format the so-called 'Array'. It fact, it is a list of strings. If Curl was already defining a header item, yours will replace it. Here is an example to change the Content Type in a POST:

curl_setopt ($ch, CURLOPT_HTTPHEADER, Array("Content-Type: text/xml"));

Yann
23-Oct-2002 12:04
beware that not all cURLlib constants are supported under php :
e.g. CURLOPT_PROGRESSFUNCTION or CURLOPT_WRITEDATA are not supported.

CURLOPT_WRITEFUNCTION, although undocumented is supported. It takes the name of a user_defined function.
the function should take two arguments (the curl handle, and the inputdata) and return the length of the written data
e.g.

function myPoorProgressFunc($ch,$str){
global $fd;
$len = fwrite($fd,$str);
print("#");
return $len;
}

curl_setopt($ch,CURLOPT_WRITEFUNCTION,"myPoorProgressFunc");

Also be aware that CURLOPT_WRITEFUNCTION  does NOT take the CURLOPT_FILE as a parameter!
in curl lib it would take CURLOPT_WRITEDATA but this is not supported by php; that's why I use "global $fd;" in my exemple function.

CURLOPT_HEADERFUNCTION works the same, and is guaranteed to receive complete header lines as input!

Hope this helps

Ivan
mrcheezy at hotmail dot com
13-Sep-2002 02:34
If you set return transfer to 1 and are sending a post form and find that this crashes php try setting follow location to 1 also. I'm not exactly sure why this crashed, but after i used follow it stopped.

      curl_setopt ($sess, CURLOPT_FOLLOWLOCATION, '1');
      curl_setopt ($sess, CURLOPT_RETURNTRANSFER, '1');
paul at zgtec dot com
26-Aug-2002 02:31
To make a POST in multipart/form-data mode
this worked for me, the " \n" at the end of the variables was very important on my OS X server.

<?php

$file = "file_to_upload.txt";
$submit_url = "http://www.url_to_upload_to.com/upload_page.php";

$formvars = array("cc"=>"us \n");
$formvars[variable_1] = "bla bla \n";
$formvars[variable_2] = "bla bla \n";
$formvars[variable_3] = "bla bla \n";
$formvars[variable_4] = "bla bla \n";
$formvars[upfile] = "@$file"; // "@" causes cURL to send as file and not string (I believe)

    // init curl handle
    $ch = curl_init($submit_url);
    curl_setopt($ch, CURLOPT_COOKIEJAR, "my_cookies.txt");  //initiates cookie file if needed
    curl_setopt($ch, CURLOPT_COOKIEFILE, "my_cookies.txt");  // Uses cookies from previous session if exist
    curl_setopt($ch, CURLOPT_REFERER, "http://www.last_url_for_referer_logs.com");  //if server needs to think this post came from elsewhere
    curl_setopt($ch, CURLOPT_VERBOSE, 1);
    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION,1); // follow redirects recursively
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $formvars);

    // perform post
    echo $pnp_result_page = curl_exec($ch);
    curl_close ($ch);

?>
jckim at iquick4u dot com
15-Apr-2002 08:05
#!/usr/local/bin/php -q
<?php

$id = "xxxx";
$pw = "xxxx";

$LOGINURL = "http://login.daum.net/Mail-bin/login.cgi";
$GETURL   = "http://www.daum.net/Mail-bin/mail_list";
$POSTFIELDS = "id=$id&pw=$pw";

function AUTH_SITE_COOKIE_STORE($LOGINURL,$POSTFIELDS)
{
    $parseURL = parse_url($LOGINURL);

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_COOKIEJAR, "$parseURL[host].cookie");
    curl_setopt($ch, CURLOPT_URL,"$LOGINURL");
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, "$POSTFIELDS");

    ob_start();
    curl_exec ($ch);
    ob_end_clean();

    curl_close ($ch);
    return "$parseURL[host].cookie";
}

function AUTH_SITE_GET($GETURL,$cookieFile)
{
    $parseURL = parse_url($GETURL);

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
    curl_setopt($ch, CURLOPT_COOKIEFILE, "$cookieFile");
    curl_setopt($ch, CURLOPT_URL,"$GETURL");
    $result = curl_exec ($ch);
    curl_close ($ch);
   
    $fp = fopen