PHP使用CURL_MULTI实现多线程采集

            $connomains = array(

		 "http://www.baidu.com/",

		 "http://www.hao123.com/",

		 "http://www.jb51.net/"

		 );

		 $mh = curl_multi_init();

		foreach ($connomains as $i => $url) {

		      $conn[$i]=curl_init($url);

		       curl_setopt($conn[$i],CURLOPT_RETURNTRANSFER,1);

		       curl_multi_add_handle ($mh,$conn[$i]);

		 }

		do { $n=curl_multi_exec($mh,$active); } while ($active);

		foreach ($connomains as $i => $url) {

		       $res[$i]=curl_multi_getcontent($conn[$i]);

		       curl_close($conn[$i]);

		 }

		print_r($res);