PHP CURL多线程的实现

后端开发PHP 314
/** 
 * curl 多线程 
 * @param array $array 并行网址 
 * @param int $timeout 超时时间
 * @return array 
 *
 * 
 */ 
/*
    //测试
    $array = array(
        "http://www.weibo.com/",
        "http://www.renren.com/",
        "http://www.qq.com/"
    );
    $data = Curl_http($array,'10');//调用
    print_r($data);//输出
    exit;
*/
function Curl_http($array, $timeout){
    $res = array();
    $mh = curl_multi_init();//创建多个curl语柄
    foreach($array as $k=>$url){
        $conn[$k] = curl_init($url);

        curl_setopt($conn[$k], CURLOPT_TIMEOUT, $timeout);//设置超时时间
        curl_setopt($conn[$k], CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36');
        curl_setopt($conn[$k], CURLOPT_MAXREDIRS, 7);//HTTp定向级别
        curl_setopt($conn[$k], CURLOPT_HEADER, 0);//这里不要header,加块效率
        curl_setopt($conn[$k], CURLOPT_FOLLOWLOCATION, 1); // 302 redirect
        curl_setopt($conn[$k], CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($conn[$k], CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt($conn[$k], CURLOPT_SSL_VERIFYHOST, 0);
        curl_multi_add_handle ($mh, $conn[$k]);
    }
    
    // 执行批处理句柄
    $active = null;
    do{
        $mrc = curl_multi_exec($mh,$active);//当无数据,active=true
    }while($mrc == CURLM_CALL_MULTI_PERFORM);//当正在接受数据时
    while($active && $mrc == CURLM_OK){//当无数据时或请求暂停时,active=true
//        if(curl_multi_select($mh) != -1){
            do{
                $mrc = curl_multi_exec($mh, $active);
            }while($mrc == CURLM_CALL_MULTI_PERFORM);
//        }
    }
    
    foreach ($array as $k => $url) {
        curl_error($conn[$k]);
        $res[$k]=curl_multi_getcontent($conn[$k]);//获得返回信息
        $header[$k]=curl_getinfo($conn[$k]);//返回头信息
        curl_close($conn[$k]);//关闭语柄
        curl_multi_remove_handle($mh  , $conn[$k]);//释放资源  
    }
    
    curl_multi_close($mh);
    return $res;
}    

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