如何使用的.htaccess从缓存中默默念，如果该文件存在？这可能吗？ [英] how to use .htaccess to silently read from the cache, if the file exists? is this possible?

问题描述

我有这个文件结构：

/
/index.php
/test.php

/example/foo/bar/test.php

/cache/index.htm
/cache/test.htm
/cache/foo/bar/test.htm

一切都在/缓存/ *是生成的PHP文件的平面文件名（.htm）。

everything in /cache/* is a flat file (.htm) of the generated php files.

基本上我想要做的就是这一点 -

Basically what i want to do is this -

• 在用户请求将/index.htm （用户 永远不会看到一个.PHP在他们的网址 即使其在飞行）
• 的.htaccess检查是否 /cache/index.htm 存在。如果是这样，从读取 文件。
• 如果 /cache/index.htm 不 存在的，它服务的index.php

• a user requests /index.htm (users will never see a .php in their url even if its made on the fly)
• .htaccess checks if /cache/index.htm exists. if so, it reads from that file.
• if /cache/index.htm doesn't exist, it serves index.php

另一个例子

• 在用户请求 /example/foo/bar/test.htm
• 如果 /cache/example/foo/bar/test.htm 存在，从中读取
• 如果它不存在，向用户显示 /example/foo/bar/test.php （但并不见.php扩展）

• a user requests /example/foo/bar/test.htm
• if /cache/example/foo/bar/test.htm exists, it reads from it
• if it doesn't exist, the user is shown /example/foo/bar/test.php (but doesn't see the .php extension)

这是可能在所有在.htaccess？

is this possible at all in .htaccess?

感谢

（顺便说一句我让其他地方的缓存文件。所以没必要让他们飞）

(btw i make the cache files elsewhere. so no need to making them on the fly)

推荐答案

假设只有同类产品中选中你想要做的是一个存在性检查，应该可以用下面的mod_rewrite~~V 规则集：

Assuming the only kind of check you want to do is an existence check, it should be possible with the following mod_rewrite rule set:

RewriteEngine On

# Check if a PHP page was requested
RewriteCond %{THE_REQUEST} ^[A-Z]+\s/[^\s]+\.php
# If so, redirect to the non-cache .htm version
RewriteRule ^(.*)\.php$ /$1.htm [R=301,L]

# Check if the file exists in the cache
RewriteCond %{DOCUMENT_ROOT}/cache/$0 -f
# If it does, rewrite to the cache file
RewriteRule ^.*$ /cache/$0 [L]

# Check that the file doesn't exist (we didn't go to the cache)
RewriteCond %{REQUEST_FILENAME} !-f
# Check that the request hasn't been rewritten to the PHP file
RewriteCond %{REQUEST_URI} !\.php$
# If both are true, rewrite to the PHP file
RewriteRule ^(.*)\.htm$ /$1.php

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