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[��]PHP��ʵ�ֶ��߳�? ��, ��һ��Ϊ�ҷ��..��ʵ��ô��. ��ҵ�һЩ��, �Ѿ�ʵ��. ȷʵ��Ե�. ��֪��PHP��ǲ�֧�ֶ��̵߳�, ��ǵ�WEB��֧�ֶ��̵߳�. Ҳ��˵��ͬ...

PHP��ʵ�ֶ��߳�? ��, ��һ��Ϊ�ҷ��..��ʵ��ô��.

��ҵ�һЩ��, �Ѿ�ʵ��. ȷʵ��Ե�.

��֪��PHP��ǲ�֧�ֶ��̵߳�, ��ǵ�WEB��֧�ֶ��̵߳�.

Ҳ��˵��ͬʱ�ö��һ��. ��Ҳ��PHP��ʵ�ֶ��̵߳Ļ��.

��е��a.php��ļ�. ��ڳ��WEB��һ��b.php

��ô��ļ��ͬʱִ�е�.

(PS: һ��֮��, WEB��ͻ�ִ��, ��ܿͻ��Ƿ��Ѿ��˳�)

��Щʱ��, ��еĲ��һ��ļ�, ��Ǳ��ļ��е�һ��ִ��.��ô��?

��ʵ��ͨ��a.php��һ�γ��.

��濴һ��:

//a.php

PHP��:

<?php
    function runThread()
    {
        $fp = fsockopen('localhost', 80, $errno, $errmsg);
        fputs($fp, "GET /a.php?act=b ");        //��ĵڶ��HTTPЭ��й涨��ͷ
                                //��׵��뿴RFC�еĶ��
        fclose($fp);
    }

    function a()
    {
        $fp = fopen('result_a.log', 'w');
        fputs($fp, 'Set in ' . Date('h:i:s', time()) . (double)microtime() . " ");
        fclose($fp);
    }

    function b()
    {
        $fp = fopen('result_b.log', 'w');
        fputs($fp, 'Set in ' . Date('h:i:s', time()) . (double)microtime() . " ");
        fclose($fp);
    }
    if(!isset($_GET['act'])) $_GET['act'] = 'a';
    if($_GET['act'] == 'a')
    {
        runThread();
        a();
    }
    else if($_GET['act'] == 'b') b();
?>

��result_a.log �� result_b.log �Ƚ�һ��ļ��з��ʵ�ʱ��. ��һᷢ��, ��ȷ��ڲ�ͬ�߳��е�.
��Щʱ��ȫһ��.

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Java ��synchronize�ķ��. ��Ǹ��.

1. ��ͬһ��Դ. �Ա��ͻ. ��ǿ��ͬʱ��ݿ��. ��Ϊ��ݿ��֧�ֲ��. ��ڶ��̵߳�PHP��

��Ҫ��ͬһ��ļ��д��. ��Ҫд�Ļ�, �ñ��ķ��ͬ��.. �� flock��ļ��м��. ��ʱ�ļ�

��߳��еȴ��ļ��ʧ while(file_exits('xxx')); ��͵��ʱ�ļ��ʱ, ��ʾ��ʵ�߳��ڲ��

��û��ļ�, ˵��߳��Ѿ��ͷ��.

2. ��Ҫ��runThread��ִ��fputs��ȡ��socket�ж�ȡ��. ��ΪҪʵ�ֶ��߳�, ��Ҫ��÷��ģʽ. ��fgets��

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��ĳ��. ��Ҫ��ļ��. ʵ��Ҫ�Ļ��socket_set_nonblock($fp) ��ʵ��.

˵��ô��, ��û��ʵ�ʵ��? ��ʲôʱ��Ҫ��ַ�� ?

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��ͬ��ҳ��ж�ȡ.

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