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php基于Socket实现多线程开发教程

May 22, 2016 pm 06:38 PM
php multithreading socket

由于php本身不支持多线程,如果我们想在php实现多线程是不是不可行呢?本教程来讲讲通过php的Socket方式实现php程序的多线程.

通过php的Socket方式实现php程序的多线程,php本身是不支持多线程的,那么如何在php中实现多线程呢?可以想一下,WEB服务器本身都是支持多线程的,每一个访问者,当访问WEB页面的时候,都将调用新的线程,通过这一点我们可以利用WEB服务器自身的线程来解决PHP不支持多线程的问题.

下面给出通过 fsockopen() 建立socket连接,然后用 用fputs() 发送消息,来实现的PHP多线程类代码:

$fp=fsockopen($_SERVER['HTTP_HOST'],80,&$errno,&$errstr,5);  
if(!$fp){ 
	echo "$errstr ($errno)<br />n"; 
} 
fputs($fp,"GET $_SERVER[PHP_SELF]?flag=1rn");  
fclose($fp);
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上面这段代码只是一个线程的操作过程,多进行几个这样的操作就是多线程了,目前所谓PHP的多线程程序都是基于这个方式的.

下面给一个完整的线程类代码:

<?php
/**  
 @title:PHP多线程类(Thread)
 @version:1.0  phprm.com
 @author:axgle <axgle@126.com>
 */
class thread {
    var $count;
    function thread($count = 1) {
        $this->count = $count;
    }
    function _submit() {
        for ($i = 1; $i <= $this->count; $i++) $this->_thread();
        return true;
    }
    function _thread() {
        $fp = fsockopen($_SERVER[&#39;HTTP_HOST&#39;], 80, &$errno, &$errstr, 5);
        if (!$fp) {
            echo "$errstr ($errno)<br />n";
        }
        fputs($fp, "GET $_SERVER[PHP_SELF]?flag=1rn");
        fclose($fp);
    }
    function exec($func) {
        isset($_GET[&#39;flag&#39;]) ? call_user_func($func) : $this->_submit();
    }
}
//应用例子:
$th = new thread(10); //10个线程
$th->exec(&#39;demo&#39;); //执行行自定义的函数
function demo() {
    fopen(&#39;data/&#39; . microtime() , &#39;w&#39;);
}
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