curl_init

curl_exec

[edit] Last updated: Fri, 25 May 2012

curl_getinfo

(PHP 4 >= 4.0.4, PHP 5)

curl_getinfo — 获取一个cURL连接资源句柄的信息

说明

mixed curl_getinfo ( resource $ch [, int $opt = 0 ] )

获取最后一次传输的相关信息。

参数

ch

由 curl_init() 返回的 cURL 句柄。

opt

这个参数可能是以下常量之一:

CURLINFO_EFFECTIVE_URL - 最后一个有效的URL地址
CURLINFO_HTTP_CODE - 最后一个收到的HTTP代码
CURLINFO_FILETIME - 远程获取文档的时间，如果无法获取，则返回值为“-1”
CURLINFO_TOTAL_TIME - 最后一次传输所消耗的时间
CURLINFO_NAMELOOKUP_TIME - 名称解析所消耗的时间
CURLINFO_CONNECT_TIME - 建立连接所消耗的时间
CURLINFO_PRETRANSFER_TIME - 从建立连接到准备传输所使用的时间
CURLINFO_STARTTRANSFER_TIME - 从建立连接到传输开始所使用的时间
CURLINFO_REDIRECT_TIME - 在事务传输开始前重定向所使用的时间
CURLINFO_SIZE_UPLOAD - 上传数据量的总值
CURLINFO_SIZE_DOWNLOAD - 下载数据量的总值
CURLINFO_SPEED_DOWNLOAD - 平均下载速度
CURLINFO_SPEED_UPLOAD - 平均上传速度
CURLINFO_HEADER_SIZE - header部分的大小
CURLINFO_HEADER_OUT - 发送请求的字符串
CURLINFO_REQUEST_SIZE - 在HTTP请求中有问题的请求的大小
CURLINFO_SSL_VERIFYRESULT - 通过设置CURLOPT_SSL_VERIFYPEER返回的SSL证书验证请求的结果
CURLINFO_CONTENT_LENGTH_DOWNLOAD - 从Content-Length: field中读取的下载内容长度
CURLINFO_CONTENT_LENGTH_UPLOAD - 上传内容大小的说明
CURLINFO_CONTENT_TYPE - 下载内容的Content-Type:值，NULL表示服务器没有发送有效的Content-Type: header

返回值

如果 opt 被设置，以字符串形式返回它的值。否则，返回返回一个包含下列元素的关联数组(它们分别对应于 opt):

"url"
"content_type"
"http_code"
"header_size"
"request_size"
"filetime"
"ssl_verify_result"
"redirect_count"
"total_time"
"namelookup_time"
"connect_time"
"pretransfer_time"
"size_upload"
"size_download"
"speed_download"
"speed_upload"
"download_content_length"
"upload_content_length"
"starttransfer_time"
"redirect_time"

更新日志

版本	说明
5.1.3	引入`CURLINFO_HEADER_OUT`.

范例

Example #1 curl_getinfo() example


<?php
// 创建一个cURL句柄
$ch = curl_init('http://www.yahoo.com/');

// 执行
curl_exec($ch);

// 检查是否有错误发生
if(!curl_errno($ch))
{
 $info = curl_getinfo($ch);

 echo 'Took ' . $info['total_time'] . ' seconds to send a request to ' . $info['url'];
}

// Close handle
curl_close($ch);
?>

注释

Note:
Information gathered by this function is kept if the handle is re-used. This means that unless a statistic is overridden internally by this function, the previous info is returned.

curl_init

curl_exec

[edit] Last updated: Fri, 25 May 2012

add a note User Contributed Notes curl_getinfo

vince 22-Oct-2010 04:56


CURLINFO_HTTP_CODE does not return a string, as the docs say, but rather an integer.



<?php

    $c = curl_init('http://www.example.com/');

    if(curl_getinfo($c, CURLINFO_HTTP_CODE) === '200') echo "CURLINFO_HTTP_CODE returns a string.";

    if(curl_getinfo($c, CURLINFO_HTTP_CODE) === 200) echo "CURLINFO_HTTP_CODE returns an integer.";

    curl_close($c);

?>



returns



"CURLINFO_HTTP_CODE returns an integer."

Anonymous 20-Jul-2010 02:53


The main doc neglects to mention that when the CURLINFO_HEADER_OUT option is set the array returned by this function will included a new property, request_header, that is a string of the headers sent in the request.

raghuveer at spiderace dot com 23-Oct-2008 05:47


A code snippet that I had attempted to enumerate the Remote File Size and to post Amount of Time taken for that particular Curl Request.



<?php



/* borrowed the Byte Conversion code (byte_convert function) posted by "olafurw at gmail.com" and modified by "d.abromeit" in http://in.php.net/filesize. I did make changes in the notation of expression of multiples of bytes from KiB => KB, MiB => MB etc all symbols in this Byte Code*/



  function byte_convert($bytes)

  {

    $symbol = array('B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB');



    $exp = 0;

    $converted_value = 0;

    if( $bytes > 0 )

    {

      $exp = floor( log($bytes)/log(1024) );

      $converted_value = ( $bytes/pow(1024,floor($exp)) );

    }



    return sprintf( '%.2f '.$symbol[$exp], $converted_value );

  }



   $userAgent = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)';

   $url = 'http://www.spiderace.com/samplefiles/testfile.zip';



    // initialize curl with given url

    $ch = curl_init($url);

    // make sure we get the header

    curl_setopt($ch, CURLOPT_HEADER, 1);

    // make it a http HEAD request

    curl_setopt($ch, CURLOPT_NOBODY, 1);

    // add useragent

    curl_setopt($ch, CURLOPT_USERAGENT, $userAgent);

    //Tell curl to write the response to a variable

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    // The maximum number of seconds to allow cURL functions to execute. 

    curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,60);

    // Tell curl to stop when it encounters an error 

    curl_setopt($ch, CURLOPT_FAILONERROR, 1);

    

    $execute = curl_exec($ch);

    

    // Check if any error occured

    if(!curl_errno($ch))

    {

        $bytes = curl_getinfo($ch, CURLINFO_CONTENT_LENGTH_DOWNLOAD);

        // Display the File Size

        echo byte_convert($bytes);

        echo "<br><br>";

        $total_time = curl_getinfo($ch, CURLINFO_TOTAL_TIME);

        echo 'Took ' . $total_time . ' seconds to send a request to ' . $url;

        clearstatcache();

    }

    curl_close($ch);



?>



NOTE: This code worked on Both Linux (tried on CentOS) & Windows Servers (tried on XAMPP For Windows on Windows XP PC), thank you. Hope this will be helpful to others as well.

master-No-sp-aM at io dot ua 17-Jul-2008 12:40


CURLINFO_CONTENT_LENGTH_DOWNLOAD contains zero in FTP request although Content-Length field is present.



Following workaround may helps:



<?php

$ch = curl_init($url);

... CURL OPTIONS ...

$result=curl_exec($ch);

$pu=parse_url($url);

if($pu['scheme']=='ftp'){

    $regexp="/Content-Length: (\d*)/";

    preg_match($regexp,$result,$matches);

    $con_len=$matches[1];

}

else $con_len = curl_getinfo($ch, CURLINFO_CONTENT_LENGTH_DOWNLOAD);

?>



Its worth to keep using CURLINFO_CONTENT_LENGTH_DOWNLOAD in http requests, becouse there could be several headers pack if CURLOPT_FOLLOWLOCATION is fired, and regular expression for this case is a little bit complicated.

nemetral 17-Jun-2008 07:57


Just a quick note: if you want to use curl_getinfo() with option CURLINFO_HEADER_OUT in order to debug your cURL request, you must add curl_setopt($handle, CURLINFO_HEADER_OUT, true); first while specifying the options.

luiheidsgoeroe at hotmail dot com 04-Feb-2008 03:02


Keep in mind that for CURLOPT_RETURNTRANSFER it has to be set with curl_setopt() before execution:



This doesn't work:

<?php

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

curl_exec($ch);

var_dump(curl_getinfo($ch,CURLINFO_HEADER_OUT));

?>



This works:

<?php

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

curl_setopt($ch, CURLINFO_HEADER_OUT, true);

curl_exec($ch);

var_dump(curl_getinfo($ch,CURLINFO_HEADER_OUT));

?>

Mark Evers 16-Jan-2008 10:14


There is a constant missing from that list.  CURLINFO_REDIRECT_COUNT will give you the number of redirects it went through if CURLOPT_FOLLOWLOCATION was set.

ssttoo at hotmail dot com 06-Apr-2004 12:13


Here are the response codes ready for pasting in an ini-style file. Can be used to provide more descriptive message, corresponding to 'http_code' index of the arrray returned by curl_getinfo(). 

These are taken from the W3 consortium HTTP/1.1: Status Code Definitions, found at

http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html



[Informational 1xx]

100="Continue"

101="Switching Protocols"



[Successful 2xx]

200="OK"

201="Created"

202="Accepted"

203="Non-Authoritative Information"

204="No Content"

205="Reset Content"

206="Partial Content"



[Redirection 3xx]

300="Multiple Choices"

301="Moved Permanently"

302="Found"

303="See Other"

304="Not Modified"

305="Use Proxy"

306="(Unused)"

307="Temporary Redirect"



[Client Error 4xx]

400="Bad Request"

401="Unauthorized"

402="Payment Required"

403="Forbidden"

404="Not Found"

405="Method Not Allowed"

406="Not Acceptable"

407="Proxy Authentication Required"

408="Request Timeout"

409="Conflict"

410="Gone"

411="Length Required"

412="Precondition Failed"

413="Request Entity Too Large"

414="Request-URI Too Long"

415="Unsupported Media Type"

416="Requested Range Not Satisfiable"

417="Expectation Failed"



[Server Error 5xx]

500="Internal Server Error"

501="Not Implemented"

502="Bad Gateway"

503="Service Unavailable"

504="Gateway Timeout"

505="HTTP Version Not Supported"



And an example usage:

<?php

$ch = curl_init(); // create cURL handle (ch)

if (!$ch) {

    die("Couldn't initialize a cURL handle");

}

// set some cURL options

$ret = curl_setopt($ch, CURLOPT_URL,            "http://mail.yahoo.com");

$ret = curl_setopt($ch, CURLOPT_HEADER,         1);

$ret = curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

$ret = curl_setopt($ch, CURLOPT_RETURNTRANSFER, 0);

$ret = curl_setopt($ch, CURLOPT_TIMEOUT,        30);



// execute

$ret = curl_exec($ch);



if (empty($ret)) {

    // some kind of an error happened

    die(curl_error($ch));

    curl_close($ch); // close cURL handler

} else {

    $info = curl_getinfo($ch);

    curl_close($ch); // close cURL handler



    if (empty($info['http_code'])) {

            die("No HTTP code was returned"); 

    } else {

        // load the HTTP codes

        $http_codes = parse_ini_file("path/to/the/ini/file/I/pasted/above");

        

        // echo results

        echo "The server responded: <br />";

        echo $info['http_code'] . " " . $http_codes[$info['http_code']];

    }



}

?>

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