curl_multi_init

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 handlescurl_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

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:<?phpwhile ($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);}?>

One of the URLs used in the first example on this page (lxr.php.net) now gives a proxy error.If you're using this first script example, replace with a different URL.