PHP语言实现脚本异步执行

php语言得用fsockopen()函数,实现脚本异步运行,代码如下

//异步请求函数(用debug参数若为true则为用为调试,开启调试可以看到异步的执行情况,但是失去异步的效果)

main.php

    <?php  
    function request_by_fsockopen($url,$post_data=array(),$debug=false){  
        $url_array = parse_url($url);  
        $hostname = $url_array['host'];  
        $port = isset($url_array['port'])? $url_array['port'] : 80;  
        @$requestPath = $url_array['path'] ."?". $url_array['query'];  
        $fp = fsockopen($hostname, $port, $errno, $errstr, 10);  
        if (!$fp) {  
            echo "$errstr ($errno)";  
            return false;  
        }  
        $method = "GET";  
        if(!empty($post_data)){  
            $method = "POST";  
        }  
        $header = "$method $requestPath HTTP/1.1\r\n";  
        $header.="Host: $hostname\r\n";  
        if(!empty($post_data)){  
            $_post = strval(NULL);  
            foreach($post_data as $k => $v){  
            $_post[]= $k."=".urlencode($v);//必须做url转码以防模拟post提交的数据中有&符而导致post参数键值对紊乱  
            }  
            $_post = implode('&', $_post);  
            $header .= "Content-Type: application/x-www-form-urlencoded\r\n";//POST数据  
            $header .= "Content-Length: ". strlen($_post) ."\r\n";//POST数据的长度  
            $header.="Connection: Close\r\n\r\n";//长连接关闭  
            $header .= $_post; //传递POST数据  
        }else{  
            $header.="Connection: Close\r\n\r\n";//长连接关闭  
        }  
        fwrite($fp, $header);  
        //-----------------调试代码区间-----------------  
        //注如果开启下面的注释,异步将不生效可是方便调试  
        if($debug){  
        $html = '';  
        while (!feof($fp)) {  
        $html.=fgets($fp);  
        }  
        echo $html;  
        }  
        //-----------------调试代码区间-----------------  
        fclose($fp);  
    }  
      
    $data=array('name'=>'guoyu','pwd'=>'123456');  
    $url='http://localhost/test/other.php';  
    request_by_fsockopen($url,$data,true);//  

other.php

    <?php  
    header("content-type:text/html;charset=utf-8");  
    //error_reporting(0);  
    //ini_set('html_errors',false);  
    //ini_set('display_errors',false);  
    $name = isset($_POST['name'])?$_POST['name']:'';  
    $pwd = isset($_POST['pwd'])?$_POST['pwd']:'';  
    echo $name.$pwd;  
    echo 'success ok';  
    die;  
    ?>  

使用实例: [运行的main.php主脚本文件] $data=array('name'=>'guoyu','pwd'=>'123456'); $url='http://localhost/test/other.php';  request_by_fsockopen($url,$data,true);//把应用B的用户表异步-同步数据 [导步执行文件other.php] 在other.php中便可以用$_POST接收main.php提交过来的参数，从而进行下一步操作