Centre index.php page

When coding a web application, should all files be linked through a single index.php file. Would doing such a thing help security, or would it make more complications later开发者_JAVA百科 on.

How would you guys achieve this? Most (if no all) the site I have seen use this approach. Is there a reason for this?

Any help is greatly appreciated.

Doing so doesn't such much about security.

The main advantage is that having every request go through index.php makes sure that you have a single entry point into your applications's PHP code -- which means you can put your initialization / configuration code there (or call it from there) and it'll always get executed.

On the how to achieve this, you'll need :

• A RewriteRule so all requests to non-existant files are sent to index.php
• In your index.php script (or somewhere called by index.php, like a router), put some code to call the right controller/action.

For the RewriteRule, here's for example what is often done with Zend Framework :

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ - [NC,L]
RewriteRule ^.*$ index.php [NC,L]