curl asynchrone pool

<?php

$urls = array(
  'http://www.example.com',
  'http://www.example.com/foo/bar',
  'http://www.example.com/baz/qux',
);

$multi = curl_multi_init();
$handles = array();

foreach ($urls as $key => $url) {
  $handles[$key] = curl_init($url);
  curl_setopt($handles[$key], CURLOPT_RETURNTRANSFER, true);
  curl_multi_add_handle($multi, $handles[$key]);
}

$running = null;

do {
  curl_multi_exec($multi, $running);
} while ($running);

foreach ($handles as $key => $handle) {
  $results[$key] = curl_multi_getcontent($handle);
  curl_multi_remove_handle($multi, $handle);
}

curl_multi_close($multi)