Online PHP editor | output for ZbIRv

<?php $strings1 = 'Арг.ен!тина ма,нит нег$ра'; $strings2 = 'S!um summ$us mu,s'; $strings3 = 'Арг.ен!тина ма,нит нег$ра'.'S!um summ$us mu,s'; $strings1 = mb_strtolower(preg_replace('/[^\p{Cyrillic}\p{Latin}]/u', '', $strings1)); var_dump($strings1); $strings2 = mb_strtolower(preg_replace('/[^\p{Cyrillic}\p{Latin}]/u', '', $strings2)); var_dump($strings2); $strings3 = mb_strtolower(preg_replace('/[^\p{Cyrillic}\p{Latin}]/u', '', $strings3)); var_dump($strings3);