curl_multi_init

(PHP 5, PHP 7)

curl_multi_init新規 cURL マルチハンドルを返す

説明

resource curl_multi_init ( void )

複数の cURL ハンドルを非同期で実行できるようにします。

パラメータ

この関数にはパラメータはありません。

返り値

成功した場合に cURL マルチハンドルリソース、失敗した場合に FALSE を返します。

例1 curl_multi_init() の例

この例は、ふたつの cURL ハンドルを作成し、それをマルチハンドルに追加して非同期で実行します。

<?php
// cURL リソースを作成します
$ch1 curl_init();
$ch2 curl_init();

// URL およびその他適切なオプションを設定します。
curl_setopt($ch1CURLOPT_URL"http://lxr.php.net/");
curl_setopt($ch1CURLOPT_HEADER0);
curl_setopt($ch2CURLOPT_URL"http://www.php.net/");
curl_setopt($ch2CURLOPT_HEADER0);

// マルチ cURL ハンドルを作成します
$mh curl_multi_init();

// ふたつのハンドルを追加します
curl_multi_add_handle($mh,$ch1);
curl_multi_add_handle($mh,$ch2);

$running=null;
// ハンドルを実行します
do {
    
$mrc curl_multi_exec($mh$active);
} while (
$mrc == CURLM_CALL_MULTI_PERFORM);

while (
$active && $mrc == CURLM_OK) {
    if (
curl_multi_select($mh) != -1) {
        do {
            
$mrc curl_multi_exec($mh$active);
        } while (
$mrc == CURLM_CALL_MULTI_PERFORM);
    }
}

// ハンドルを閉じます
curl_multi_remove_handle($mh$ch1);
curl_multi_remove_handle($mh$ch2);
curl_multi_close($mh);

?>

参考

add a note add a note

User Contributed Notes 4 notes

up
27
xxavalanchexx at gmail dot com
3 years ago
According to https://bugs.php.net/bug.php?id=61141:

On Windows setups using libcurl version 7.24 or later (which seems to correspond to PHP 5.3.10 or later), you may find that curl_multi_select() always returns -1, causing the example code in the documentation to timeout. This is, apparently, not strictly a bug: according to the libcurl documentation, you should add your own sleep if curl_multi_select returns -1.

Therefore, in order to work correctly on Windows for PHP 5.3.10+, the second loop in the example code should look something like the following:

<?php
while ($active && $mrc == CURLM_OK) {
    if (
curl_multi_select($mh) == -1) {
       
usleep(100);
    }
    do {
       
$mrc = curl_multi_exec($mh, $active);
    } while (
$mrc == CURLM_CALL_MULTI_PERFORM);
}
?>
up
16
w_haigh at yahoo dot com
2 years ago
Here's an easier to follow example, From : http://arguments.callee.info/2010/02/21/multiple-curl-requests-with-php/

// build the individual requests, but do not execute them
$ch_1 = curl_init('http://webservice.one.com/');
$ch_2 = curl_init('http://webservice.two.com/');
curl_setopt($ch_1, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch_2, CURLOPT_RETURNTRANSFER, true);
 
// build the multi-curl handle, adding both $ch
$mh = curl_multi_init();
curl_multi_add_handle($mh, $ch_1);
curl_multi_add_handle($mh, $ch_2);
 
// execute all queries simultaneously, and continue when all are complete
  $running = null;
  do {
    curl_multi_exec($mh, $running);
  } while ($running);

//close the handles
curl_multi_remove_handle($mh, $ch1);
curl_multi_remove_handle($mh, $ch2);
curl_multi_close($mh);
 
// all of our requests are done, we can now access the results
$response_1 = curl_multi_getcontent($ch_1);
$response_2 = curl_multi_getcontent($ch_2);
echo "$response_1 $response_2"; // output results
up
-6
hushuilong at gmail dot com
6 years ago
Simulate multiple threads request:
<?php
function multiple_threads_request($nodes){
       
$mh = curl_multi_init();
       
$curl_array = array();
        foreach(
$nodes as $i => $url)
        {
           
$curl_array[$i] = curl_init($url);
           
curl_setopt($curl_array[$i], CURLOPT_RETURNTRANSFER, true);
           
curl_multi_add_handle($mh, $curl_array[$i]);
        }
       
$running = NULL;
        do {
           
usleep(10000);
           
curl_multi_exec($mh,$running);
        } while(
$running > 0);
       
       
$res = array();
        foreach(
$nodes as $i => $url)
        {
           
$res[$url] = curl_multi_getcontent($curl_array[$i]);
        }
       
        foreach(
$nodes as $i => $url){
           
curl_multi_remove_handle($mh, $curl_array[$i]);
        }
       
curl_multi_close($mh);       
        return
$res;
}
print_r(muti_thread_request(array(
   
'http://www.example.com',
   
'http://www.example.net',
)));
?>
up
-46
jaisen at jmathai dot com
9 years ago
http://github.com/jmathai/epicode/tree/master/php/EpiCurl.php

If you fire off 10 curl requests in parallel you don't have to wait for all of them to be finished before accessing one which is already finished.
To Top