Question

I’m pretty stuck in here, so what I need is a function or, an idea to create a function, to work pretty the same way as mod_rewrite of Apache.
It is supposed to have as param a regexp, writtten for mod_rewrite, and the url. Should return an array of parameters extracted from it.

Here’s a short example of how it should work:

    function rewrite($regexp, $url){ 
           ....
    }

    $params = rewrite('([^/]+)-([^/]+).html', 'Oval-Shape.html');

    print_r($params);

The code above should print:

   array(1=>Oval, 2=>Shape)

Answer 1

Yes, RewriteRule uses a perl compatible regular expression. That’s the same PHP does in preg_match().

A difference is, that in ModRewrite you can prefix it with a ! to not match something.

Another thing is, when you add the NC flag, they are case in-sensitive. In a PHP regex this can be achieved by using the i modifier.

So before you start re-invent the wheel, why not choose that function? It works like this:

$url = 'Oval-Shape.html';
$regexp = '([^/]+)-([^/]+).html';
$result = preg_match("({$regexp})i", $url, $params);
print_r($params);

And this is the output:

Array
(
    [0] => Oval-Shape.html
    [1] => Oval
    [2] => Shape
)

So $params[1] is what you know as $1 in .htacces and so on.