Is there any way in php.info (or other config file) for me to indicate a script to be run every single time PHP is invoked?
I'm interested in mapping HTTP requests for a particular page to a Controller class representing that page, similar to how a lot of MVC framework (like CI) work.
For instance, the user clicks a link that should map to /webroot/some/url/widget.php, but rather the /webroot/app/mvc/controllers/WidgetController.php class is what gets invoked instead.
To do this, I figure MVC framework like CI have figured out a way to "hook" the PHP Runtime by running a script that runs and says "oh, the request is for widget.php, but we want to actually run the WidgetController.php object."
Any ideas/thoughts/suggestions/concerns?
Thanks!
You need a router, and apache mod_rewrite or equivalent. You set up mod_rewrite to send all requests to a single file, such as /index.php. The router then looks at the request URL and determines which controller file to load and which method to call. Pretty much any MVC framework has this functionality built-in, and they all work pretty much the same.
I think you might be the wrong trail here. Zend Framework and other Frameworks I know use mod_rewrite or similar techniques to redirect requests, which are then processed by some kind of Front Controller.
This means that your request to example.org/mypage is being redirected by Apache (not PHP) to myfrontcontroller.php, which then decides how to handle the incoming request.
An index.php in the webroot should be sufficient, the path will be passed as the server variable PATH_INFO.
See http://us3.php.net/manual/en/ini.core.php#ini.auto-prepend-file
Edit: My answer is simply meant to be an FYI. As others have mentioned, mod_rewrite is the accepted way to solve the problem.
What you're looking for is the php.ini option auto_prepend_file.