The request redirection emulation is done by rewriting some request variables that contain request paths, like SCRIPT_FILENAME, SCRIPT_NAME, PHP_SELF, REQUEST_URI, PATH_TRANSLATED, and QUERY_STRING.
It can parse and change the output of the current page script to rewrite the URLs links (also in image maps) or images in the page with absolute URLs, relative URIs and URLs that contain scheme and host (http://www.somehost.com). Relative parent directory URIs (../) are also supported.
You can do the rewriting by using PHP buffering support.
Then the class optionally can compress the processed page output to serve the page in less time if the user browser supports compression.
Or you can rewrite a string with the string-rewrite method, if you cannot (or don't) want use the buffering support.
Transform URLs to make them search engine friendly
Clean URL is a class that implements a method to make URLs more user and search engine friendly by removing '?' and '=' symbols from URI.
This class is meant to be used in conjunction with URL rewriting Web server modules that map the cleaned URLs generated by this class into common URLs with query parameters.
This class can be used to redirect requests based on URL rewriting rules.
It can check whether the current request URL matches one or more rules.
If one of the defined rules is matched, the class determines the path of a PHP script that will handle the request and executes that script using the PHP require command.
If none of the rules matches, the class include the default error script and returns the 404 status code to the browser.
Rewrite request variables based on the request URI
This class can rewrite request variables by parsing the request URI in a similar way to what the Apache module mod_rewrite does but without using regular expression based rules.
It allows to map a request to an URL like http://webseite.com/pages/index.1.html into the equivalent to a request to http://website.com/index.php?method=pages&page=1 .
The mapping is performed by a script that handles page access errors by using the class to rewrite the request variables.
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