PHP multithreading classes and usage examples

/** 
* @title: PHP多线程类(Thread) 
* @version: 1.0 
* 
* PHP多线程应用示例： 
* require_once 'thread.class.php'; 
* $thread = new thread(); 
* $thread->addthread('action_log','a'); 
* $thread->addthread('action_log','b'); 
* $thread->addthread('action_log','c'); 
* $thread->runthread(); 
* 
* function action_log($info) { 
* $log = 'log/' . microtime() . '.log'; 
* $txt = $info . "rnrn" . 'Set in ' . Date('h:i:s', time()) . (double)microtime() . "rn"; 
* $fp = fopen($log, 'w'); 
* fwrite($fp, $txt); 
* fclose($fp); 
* } 
*/ 
class thread { 
var $hooks = array(); 
var $args = array(); 
function thread() { 
} 
function addthread($func) 
{ 
$args = array_slice(func_get_args(), 1); 
$this->hooks[] = $func; 
$this->args[] = $args; 
return true; 
} 
function runthread() 
{ 
if(isset($_GET['flag'])) 
{ 
$flag = intval($_GET['flag']); 
} 
if($flag || $flag === 0) 
{ 
call_user_func_array($this->hooks[$flag], $this->args[$flag]); 
} 
else 
{ 
for($i = 0, $size = count($this->hooks); $i < $size; $i++) 
{ 
$fp=fsockopen($_SERVER[&#39;HTTP_HOST&#39;],$_SERVER[&#39;SERVER_PORT&#39;]); 
if($fp) 
{ 
$out = "GET {$_SERVER[&#39;PHP_SELF&#39;]}?flag=$i HTTP/1.1rn"; 
$out .= "Host: {$_SERVER[&#39;HTTP_HOST&#39;]}rn"; 
$out .= "Connection: Closernrn"; 
fputs($fp,$out); 
fclose($fp); 
} 
} 
} 
} 
}

$thread = new thread(); 
$thread->addthread('func1','info1'); 
$thread->addthread('func2','info2'); 
$thread->addthread('func3','info3'); 
$thread->runthread();

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

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