php利用curl实现多线程的类代码

<?php<br />class curl_multi{<br /> private $url_list=array();<br /> private $curl_setopt=array(<br /> 'CURLOPT_RETURNTRANSFER' => 1,//结果返回给变量<br /> 'CURLOPT_HEADER' => 0,//是否需要返回HTTP头<br /> 'CURLOPT_NOBODY' => 0,//是否需要返回的内容<br /> 'CURLOPT_FOLLOWLOCATION' => 0,//自动跟踪<br /> 'CURLOPT_TIMEOUT' => 6//超时时间(s)<br /> );<br /> function __construct($seconds=30){<br /> set_time_limit($seconds);<br /> }<br /> /*<br /> * 设置网址<br /> * @list 数组<br /> */<br /> public function setUrlList($list=array()){<br /> $this->url_list=$list;<br /> }<br /> /*<br /> * 设置参数<br /> * @cutPot array<br /> */<br /> public function setOpt($cutPot){<br /> $this->curl_setopt=$cutPot+$this->curl_setopt;<br /> }<br /> /*<br /> * 执行<br /> * @return array<br /> */<br /> public function execute(){<br /> $mh=curl_multi_init();<br /> foreach($this->url_list as $i=>$url){<br /> $conn[$i]=curl_init($url);<br /> foreach($this->curl_setopt as $key => $val){<br /> curl_setopt($conn[$i],preg_replace('/(CURLOPT_w{1,})/ie','$0',$key),$val);<br /> }<br /> curl_multi_add_handle($mh,$conn[$i]);<br /> }<br /> $active=false;<br /> do{<br /> $mrc=curl_multi_exec($mh,$active);<br /> }while($mrc == CURLM_CALL_MULTI_PERFORM);<br /><br /> while($active and $mrc == CURLM_OK){<br /> if(curl_multi_select($mh) != -1){<br /> do{<br /> $mrc=curl_multi_exec($mh,$active);<br /> }while($mrc == CURLM_CALL_MULTI_PERFORM);<br /> }<br /> }<br /> $res=array();<br /> foreach($this->url_list as $i => $url){<br /> $res[$i]=curl_multi_getcontent($conn[$i]);<br /> curl_close($conn[$i]);<br /> curl_multi_remove_handle($mh,$conn[$i]);//释放资源 <br /> }<br /> curl_multi_close($mh);<br /> return $res;<br /> }<br />}

$curl_mul=new curl_multi();<br />$curl_mul->setUrlList(array('http://www.baidu.com/img/baidu_sylogo1.gif','http://www.baidu.com/img/baidu_sylogo1.gif','http://www.baidu.com/img/baidu_sylogo1.gif'));<br />$a=$curl_mul->execute();<br />$i=1;<br />foreach($a as $v){<br />$filename=$i.'.gif';<br /> $fp2=@fopen($filename,'a');<br /> fwrite($fp2,$v);<br /> fclose($fp2);<br />$i++;<br />}