PHP Regex not matching polish characters - php

Question

This code doesn't return any matches when I type "szukaj/zwierzęta" in the url path, but when I type "szukaj/zwierzeta" it works.
<?php
$url = "http://{$_SERVER['HTTP_HOST']}{$_SERVER['REQUEST_URI']}";
$rules = array(
'film' => "/film/(?'film_slug'[^/]+)-(?'film_id'\d+)",
'szukaj' => "/szukaj/(?'query'[\w\-]+)",
);
foreach ( $rules as $action => $rule ) {
if ( preg_match( '~^'.$rule.'$~i', $uri, $params ) ) {
switch($action)
{
case 'szukaj': (doesn't work with ęąćźż, works with others)
}
}
}
I also tried with 'szukaj' => "/szukaj/(?'query'[\pL|\pN-]+)",
but it didn't work.

Answer 1

You can use [a-zA-ZąćęłńóśźżĄĆĘŁŃÓŚŹŻ-] to mach any a-zA-Z and any polish special char.
Here is the usage inside your code:
<?php
$url = "http://{$_SERVER['HTTP_HOST']}{$_SERVER['REQUEST_URI']}";
$rules = array(
'film' => "/film/(?'film_slug'[^/]+)-(?'film_id'\d+)",
'szukaj' => "/szukaj/(?'query'[+a-zA-ZąćęłńóśźżĄĆĘŁŃÓŚŹŻ-]+)",
);
foreach ( $rules as $action => $rule ) {
if ( preg_match( '~^'.$rule.'$~i', $uri, $params ) ) {
switch($action)
{
case 'szukaj': (doesn't work with ęąćźż, works with others)
}
}
}
And regex101 example:
https://regex101.com/r/F0uiDE/1