PHP 错误与异常 笔记与总结（18 ）页面重定向实现

在发生错误时，将用户重定向到另一个页面。

 1 <?php
 2 header(‘content-type:text/html; charset=utf-8‘);
 3
 4 class ExceptionRedirectHandler{
 5
 6     protected $_exception;
 7     protected $redirect = ‘404.html‘;
 8     protected $_logFile = ‘D:/practise/php/Error/LogException3.log‘;
 9
10     //构造函数中得到异常对象
11     public function __construct(Exception $e){
12         $this->_exception = $e;
13     }
14
15     public static function handle(Exception $e){
16         $self = new self($e);
17         $self->log();
18         //清除所有的输出缓冲
19         while(@ob_end_clean());
20         header(‘HTTP/1.1 307 Temporary Rediret‘);
21         header(‘Cache-Control:no-cache, must-revalidate‘);
22         header(‘Expires: Sun, 05 Jul 2015 22:36:42 GMT‘);
23         header(‘Location:‘.$self->redirect);
24         exit(1);
25     }
26
27     public function log(){
28         error_log($this->_exception->getMessage().PHP_EOL, 3, $this->_logFile);
29     }
30 }
31
32 set_exception_handler(array(‘ExceptionRedirectHandler‘, ‘handle‘));
33
34 //测试
35 $conn = mysql_connect(‘localhost‘, ‘root‘, ‘root123‘);
36 if(!$conn){
37     throw new Exception("数据库连接失败");
38
39 }

跳转到 404 页面：