PHP多线程类及用法实例_php技巧

本文实例讲述了PHP多线程类及用法。分享给大家供大家参考。具体分析如下：

一般来说可通过WEB服务器来实现PHP多线程功

搞代gaodaima码能,当然,对多线程有深入理解的人都知道通过WEB服务器实现的多线程只能模仿多线程的一些效果,并不是真正意义上的多线程.

但不管怎么样,它还是能满足我们的一些需要的,在需要类似多线程的功能方面还是可以采用这个类,代码如下:

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

使用方法,代码如下:

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

说明:

addthread() 是添加线程函数,第一个参数是函数名,之后的参数(可选)为传递给指定函数的参数.

runthread() 是执行线程的函数.

PHP实例:利用curl实现多线程下载图片

其实是php利用curl实现的一个多线程类,有了这个类,我们也可利用该类执行多线程任务了,代码如下:

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 />}

php使用多线程下载类示例,下载远程图片,代码如下:

$curl_mul=new curl_multi();  <br />$curl_mul->setUrlList(array('http://www.gaodaima.com/img/logo.jpg','http://www.gaodaima.com/img/logo.jpg','http://www.gaodaima.com/img/logo.jpg'));  <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 />}

希望本文所述对大家的PHP程序设计有所帮助。

喜欢 (0)赏

[搞代码]

分享 (0)