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Home Backend Development PHP Tutorial Typecho/WordPress 是怎样做到伪静态的?

Typecho/WordPress 是怎样做到伪静态的?

Jun 06, 2016 pm 08:45 PM
php Pseudo-static

我在自己的博客(Typecho)上开启伪静态的时候,文章不能正常访问,然后在站点根目录创建了一个 .htaccess 文件并且添加了一句 RewriteEngine On ,文章就能正常访问了。请问这是怎么实现的?是单纯的靠 PHP 实现伪静态吗?可是这好像也涉及到了服务器的配置啊。
我的主机是 Linux + Apache 2.2 + PHP 5.3 。


我在网上找过只靠 PHP 程序来实现伪静态的代码,可是在虚拟机上测试不通过;添加 .htaccess 文件之后还是不能实现,代码如下:

<?php
function mod_rewrite($url='',$rootURL='http://www.phpernote.com/'){
    global $_GET;
    $url=empty($url)?cur_page_url():$url;
    $url=str_ireplace(array($rootURL,'.html'),'',$url);
    $url=explode('/',$url);
    $_GET=$url;
    return $_GET;
}
/*获取当前页面的URL(包括参数)*/
function cur_page_url(){
    $pageURL='http';
    $_SERVER['HTTPS']=='on' && $pageURL.='s';
    $pageURL.='://';
    $pageURL.=$_SERVER['SERVER_PORT']!='80'?$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].$_SERVER['REQUEST_URI']:$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI'];
    return $pageURL;
}
mod_rewrite('http://www.phpernote.com/open-source-plug-in/592.html');
echo '<pre class="brush:php;toolbar:false">';print_r($_GET);
Copy after login
Copy after login

代码来源地址:http://www.phpernote.com/php-function/729.html

回复内容:

我在自己的博客(Typecho)上开启伪静态的时候,文章不能正常访问,然后在站点根目录创建了一个 .htaccess 文件并且添加了一句 RewriteEngine On ,文章就能正常访问了。请问这是怎么实现的?是单纯的靠 PHP 实现伪静态吗?可是这好像也涉及到了服务器的配置啊。
我的主机是 Linux + Apache 2.2 + PHP 5.3 。


我在网上找过只靠 PHP 程序来实现伪静态的代码,可是在虚拟机上测试不通过;添加 .htaccess 文件之后还是不能实现,代码如下:

<?php
function mod_rewrite($url='',$rootURL='http://www.phpernote.com/'){
    global $_GET;
    $url=empty($url)?cur_page_url():$url;
    $url=str_ireplace(array($rootURL,'.html'),'',$url);
    $url=explode('/',$url);
    $_GET=$url;
    return $_GET;
}
/*获取当前页面的URL(包括参数)*/
function cur_page_url(){
    $pageURL='http';
    $_SERVER['HTTPS']=='on' && $pageURL.='s';
    $pageURL.='://';
    $pageURL.=$_SERVER['SERVER_PORT']!='80'?$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].$_SERVER['REQUEST_URI']:$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI'];
    return $pageURL;
}
mod_rewrite('http://www.phpernote.com/open-source-plug-in/592.html');
echo '<pre class="brush:php;toolbar:false">';print_r($_GET);
Copy after login
Copy after login

代码来源地址:http://www.phpernote.com/php-function/729.html

Wordpress,

完整的apache .htaccess是这样的

<code><IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
</code>
Copy after login

nginx, 则是

<code>location / {

    try_files $uri $uri/ /index.php?$args;
  }
</code>
Copy after login

两者都是实现一个目地:
将所有的uri请求转给index.php. index.php作为入口, 在某个时候调用wp-includes/class-wp.php,
由parse_request函数负责解析当前的uri.

我举个简单的例子,当你的permalink structure设置为/%postname%/%post_id%.html

然后,wp内部生成相对应的正则, ([^/]+)/([0-9]+).html(/[0-9]+)?/?$

访问http://www.test.com/i-am-a-post/123.html时,

<code>list( $req_uri ) = explode( '?', $_SERVER['REQUEST_URI'] );
$req_uri = trim($req_uri, '/');
</code>
Copy after login

这时,$req_uri的值为i-am-a-post/123.html. 与permalink structure的正则匹配上了,获取后面的id,也就是123, 然后就是get_post了...

这个例子是非常简化版的wp解析uri过程.

大部分程序,包括框架,也是这样实现你所谓的"伪静态".

一般,大家都称这个过程为routing. 由两个部分组成: parser 和dispatcher.

你那个例子,勉强算是parser. 还少了个dispatcher.

不推荐阅读wp代码, 尤其是新手.


补充下:
wp生成的正则 ([^/]+)/([0-9]+).html(/[0-9]+)?/?$.

后面的(/[0-9]+)?/?$ 是用来匹配分页的.

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