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curl_multi_exec

(PHP 5)

curl_multi_execRun the sub-connections of the current cURL handle

Description

int curl_multi_exec ( resource $mh , int &$still_running )

Processes each of the handles in the stack. This method can be called whether or not a handle needs to read or write data.

Parameters

mh

A cURL multi handle returned by curl_multi_init().

still_running

A reference to a flag to tell whether the operations are still running.

Return Values

A cURL code defined in the cURL Predefined Constants.

Note:

This only returns errors regarding the whole multi stack. There might still have occurred problems on individual transfers even when this function returns CURLM_OK.

Examples

Example #1 curl_multi_exec() example

This example will create two cURL handles, add them to a multi handle, and then run them in parallel.

<?php
// create both cURL resources
$ch1 curl_init();
$ch2 curl_init();

// set URL and other appropriate options
curl_setopt($ch1CURLOPT_URL"http://lxr.php.net/");
curl_setopt($ch1CURLOPT_HEADER0);
curl_setopt($ch2CURLOPT_URL"http://www.php.net/");
curl_setopt($ch2CURLOPT_HEADER0);

//create the multiple cURL handle
$mh curl_multi_init();

//add the two handles
curl_multi_add_handle($mh,$ch1);
curl_multi_add_handle($mh,$ch2);

$active null;
//execute the handles
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);
    }
}

//close the handles
curl_multi_remove_handle($mh$ch1);
curl_multi_remove_handle($mh$ch2);
curl_multi_close($mh);

?>

See Also

PHP Manual