Online PHP editor | refs for govdO

<?php $strings = [ 'Арг.ен!тина ма,нит нег$ра', 'S!um summ$us mu,s', 'Арг.ен!тина ма,нит нег$ра'.'S!um summ$us mu,s', ]; foreach($strings as $string) { $string = mb_strtolower($string); $preparedString = preg_replace('/[^\p{Cyrillic}\p{Latin}]/u', '', $string); echo $string.' -> '.$preparedString."\n"; }