Question

I have a regular expression for matching URIs. For example,

preg_match("/^my\/uri\//i", "my/uri/whatever");

Which I use for routing, for exmample “http://www.mywebsite.com/my/uri/page.html” will match the above (with the protocol/host removed of course).

Is there any way to evaluate the regular expression into the most general URI that will match? For example,

“my/uri/”

Answer 1

I didn’t understand what you actually want.

This code might be what you need:

$general_uri = 'my/uri/';
$regex = '/^' . preg_quote($general_uri) . '/i';

If you want reverse of the above code:

$regex = '/^my\/uri\//i';
$general_uri = str_replace('\\', '', preg_replace('/^\/\^(.*)\/i?$/', '$1', $regex));

However above code will not work on complicated regexes.