/** * Normalizes to UTF-8 NFC, converting from WINDOWS-1252 when needed. * * @param string $s * @param int $normalization_form * @param string $leading_combining * * @return string */ public static function filterString($s, $normalization_form = 4, $leading_combining = '◌') { return UTF8::filter($s, $normalization_form, $leading_combining); }