PHP 送 301 / 302 轉址的 Header

以往 301 我都是設在 Apache 裡面，如下：

RewriteRule ^news$  http://example.com/news/ [R=301,NE,L]

想要在 PHP 送 301 / 302 Redirect 的 Header 要如何寫？

HTTP 定義 301 / 302 的 Header 意義：

• 301: 永久轉址 (Permanently Moved)
• 302: 臨時轉址 (Temporarily Moved)

PHP 送 301 / 302 轉址的 Header

PHP 301 Redirect (永久轉址)的寫法

1. vim 301.php

   <?php
   header("HTTP/1.1 301 Moved Permanently");
   header("Location: http://example.com");
   ?>

2. vim 301.php # 新寫法

   <?php header("Location: http://example.com", TRUE, 301); ?>

3. $ curl -I http://localhost/301.php # 測試

   HTTP/1.1 301 Moved Permanently
   Date: Fri, 20 Sep 2015 07:15:19 GMT
   Server: Apache/2.4.10
   Location: http://example.com/
   Content-Type: text/html; charset=UTF-8

PHP 302 Redirect 寫法

1. vim 302.php

   <?php
   header("Location: http://example.com");
   ?>

2. $ curl -I http://localhost/302.php # 測試

   HTTP/1.1 302 Found
   Date: Fri, 20 Sep 2015 07:15:37 GMT
   Server: Apache/2.4.10
   Location: http://example.com/
   Content-Type: text/html; charset=UTF-8