Tiny helper function that removes all diacritical signs from characters. Function is aware of German and Danish diacritic particularities.

composer.json

"require": {
    "vria/nodiacritic": "0.*"
}

use VRia\Utils\NoDiacritic;

$noDiacriticString = NoDiacritic::filter("Révolution française");

As expected, the result is Revolution francaise.

The library is aware of particularities in German and Danish language:

use VRia\Utils\NoDiacritic;

$noAccentsNiceStreet = NoDiacritic::filter("Schöne straße", "de");

The result is Schoene strasse.

The code is inspired by WordPress' remove_accents function.