PHP function to do parallel curl requests

multiThreadedCURL.php

function threadedRequests($urls){
		
		$mh = curl_multi_init();
		
		$curl_array = array();
		foreach($urls 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]);
		}
		
		$running = NULL;
		do {
			curl_multi_exec($mh,$running);
		} while($running > 0);
		 
		$res = array();
		foreach($urls as $i => $url){
			
			$res[$i] = curl_multi_getcontent($curl_array[$i]);
			curl_multi_remove_handle($mh, $curl_array[$i]);
		}
		curl_multi_close($mh);
		
		return $res;
	}