


Simple explanation and solution of rewrite in php runtime and http web
本文针对函数计算的 php runtime web 相关运用开发, 提供一个简单实现url rewrite的方案,在介绍方案之前,我们先看看相关的几个概念: 伪静态页面,动态页面,rewrite.
伪静态
静态网页
比如xxx网站上放了一个abc.html文件,你想访问它就直接输入xxx. com/abc.html。Web服务器看到这样的地址就直接找到这个文件输出给客户端。
动态网页
假如你想做一个显示当前时间的页面,那么就可以写个PHP文件,然后访问xxx. com/abc.php。Web服务器看到这样的地址,找到abc.php这个文件,会交给PHP执行后返回给客户端。而动态网页往往要输入参数,所以地址就变成xxx. com/abc.php?a=1&b=2。
搜索引擎比较烦这种带问号的动态网页,因为参数可以随便加,而返回内容却不变,所以会对这种网页降权。于是有了mod_rewrite,它可以重新映射地址。
rewrite
比如当前这个页面的地址 http://www.xxx.com/post/20153311,Web服务器收到请求后会重新映射为 www.xxx.com/post.php?id=20153311,然后再执行那个PHP程序。(以上网址均为假设)这样,在内部不改变的情况下,对外呈现出来的网址变成了没有问号的象静态网页的网址一样。于是有人给起了个名字叫“伪静态”。其实也没什么伪的,就是没有问号的静态网址,让搜索引擎舒服点而已。
函数计算 php runtime 简单实现 rewrite 的一种方法
先以简单的nginx 中的一个简单的 rewrite 为例:
location ~ ^/(\w+)$ { rewrite /index.php?sub=$1; } location ~ ^/post/(\w+)/(\d+)$ { rewrite /post.php?class=$1&id=$2; }
php url rewrite 简单实现
<?php function rewrite_urls($s) { $in = array( '|^/post/(\\w+)/(\\d+)$|', '|^/(\\w+)$|' ); $out = array( '/post.php?class=$1&id=$2', '/index.php?sub=$1', ); return preg_replace($in, $out, $s); } $post_url = '/post/literatrue/34'; echo rewrite_urls($post_url) .PHP_EOL; $index_url = '/admin'; echo rewrite_urls($index_url) .PHP_EOL;
执行输出结果:
/post.php?class=literatrue&id=34 /index.php?sub=admin
因此在使用 php runtime
的时候,根据收到请求的uri
(假设是/post/literatrue/34
), 执行 rewrite_urls
函数(rewrite
规则填写在这个函数的 $in
和 $out
中), 然后将 rewrite
后的 uri (/post.php?class=literatrue&id=34)
作为调用 fcPhpCgiProxy.requestPhpCgi
函数时,传入参数 $fastCgiParams
的一对 key-value
。
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