PHP Manual: curl_multi_exec

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curl_multi_exec

(PHP 5)

curl_multi_exec -- Run 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($ch1, CURLOPT_URL, "http://www.example.com/");
curl_setopt($ch1, CURLOPT_HEADER, 0);
curl_setopt($ch2, CURLOPT_URL, "http://www.php.net/");
curl_setopt($ch2, CURLOPT_HEADER, 0);

//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);

$running=null;
//execute the handles
do {
    curl_multi_exec($mh,$running);
} while ($running > 0);
//close the handles
curl_multi_remove_handle($ch1);
curl_multi_remove_handle($ch2);
curl_multi_close($mh);

?>