php事件驅動

時間 2019-11-29

標籤 php 事件驅動欄目 PHP 简体版

原文原文鏈接

1. [文件] class.Dispatcher.php ~ 967B 下載(9)

 
         <?php 
        
         session_start(); 
        
         require_once 
         ( 
         'class.Handler_Event.php' 
         ); 
        
         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't handle this!" 
         ; 
        
         } 
        
         } 
        
         } 
        
         ?> 
        
         <html> 
        
         <head><title>Secure,Event Driven Record Viewer!</title></head> 
        
         <body> 
        
         <form action= 
         "<? echo $_SERVER['PHP_SELF'] ?>" 
         method= 
         "post" 
         > 
        
         <input type= 
         "submit" 
         name= 
         "event" 
         value= 
         "View" 
         > 
        
         <input type= 
         "submit" 
         name= 
         "event" 
         value= 
         "Edit" 
         > 
        
         </form> 
        
         </body> 
        
         </html> 
        
         <?php 
        
         function 
         handle(){ 
        
         $event 
         = 
         $_POST 
         [ 
         'event' 
         ]; 
        
         $do 
         = 
         new 
         Dispatcher( 
         $event 
         ); 
        
         $do 
         ->handle_the_event(); 
        
         } 
        
         $_SESSION 
         [ 
         'name' 
         ]= 
         "Wangzy" 
         ; 
        
         if 
         (isset( 
         $_POST 
         [ 
         'event' 
         ])) handle(); 
        
         ?>

2. [文件] class.Handler_Event.php ~ 1KB 下載(6)

 
         <?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 
         [ 
         'number' 
         ]. 
         "\tName:" 
         . 
         $row 
         [ 
         'name' 
         ]. 
         "<br>" 
         ; 
        
         } 
        
         } 
        
         function 
         secure_handler(){ 
        
         if 
         ( 
         $_SESSION 
         [ 
         'name' 
         ]== 
         "Wangzy" 
         ){ 
        
         $this 
         ->handled_event(); 
        
         } 
         else 
         { 
        
         echo 
         "Sorry {$_SESSION['name']} 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(); 
        
         } 
        
         }

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