Heim > Artikel > php教程 > PHP 事件驱动程序

PHP 事件驱动程序

PHP中文网Original: 2016-05-26 08:18:441240Durchsuche

1.class.Dispatcher.php

<?php
session_start();
require_once(&#39;class.Handler_Event.php&#39;);
header("Content-type:text/html; charset=utf-8");
 
class Dispatcher{
    private $handle;
     
    function __construct($event_handle){
        $this->handle=$event_handle;
    }
     
    function handle_the_event(){
        $name="handler_$this->handle";
        if(class_exists("$name")){
            $handler_obj=new $name($this->handle);
            $response=$handler_obj->secure_handler();
            return $response;
        }else{
            echo "I can&#39;t handle this!";
        }
    }
}
?>
<html>
<head><title>Secure,Event Driven Record Viewer!</title></head>
 
<body>
<form action="<? echo $_SERVER[&#39;PHP_SELF&#39;] ?>" method="post">
   <input type="submit" name="event" value="View">
   <input type="submit" name="event" value="Edit">
</form>
</body>
</html>
<?php
function handle(){
    $event=$_POST[&#39;event&#39;];
    $do=new Dispatcher($event);
    $do->handle_the_event();
}
 
$_SESSION[&#39;name&#39;]="Wangzy";
 
if(isset($_POST[&#39;event&#39;])) handle();
?>

2.class.Handler_Event.php

<?php
//Event parent
abstract class Event_Handler{
    function dbconn(){
        $link_id=mysql_connect("localhost","root","root");
        mysql_select_db("mytest",$link_id);
        mysql_query("set names utf8",$link_id);
        return $link_id;
    }
     
    abstract function handled_event();
    abstract function secure_handler();
}
 
//View Event
class Handler_View extends Event_Handler{
    private $handle;
     
    function __construct($event_handle){
        $this->handle=$event_handle;
    }
     
    function handled_event(){
        echo "The event, $this->handle, is now handled.<br>
        It is ,I promise!<br><br>
        Your records are as follows:<br><br>";
         
        $id=parent::dbconn();
        $result=mysql_query("select * from table01",$id);
        while($row=mysql_fetch_array($result)){
            echo "Numbers:".$row[&#39;number&#39;]."\tName:".$row[&#39;name&#39;]."<br>";
        }
    }
     
    function secure_handler(){
        if($_SESSION[&#39;name&#39;]=="Wangzy"){
            $this->handled_event();
        }else{
            echo "Sorry {$_SESSION[&#39;name&#39;]} you are not authorized!";
        }
    }
}
 
//Edit Event
class Handler_Edit extends Event_Handler{
    private $handle;
     
    function __construct($event_handle){
        $this->handle=$event_handle;
    }
     
    function handled_event(){
        echo "This is event $this->handle, which is now handled -no kidding!<br>";
    }
     
    function secure_handler(){
        $this->handled_event();
    }
}

Stellungnahme：

Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn

Vorheriger Artikel：php Imagick 生成图片Nächster Artikel：函数连续调用

In Verbindung stehende Artikel

Mehr sehen