<?php $re= '/[0-9]{1,2}\s?(лет)|(месяц)|(год)/ui'; ?>
Standard input is empty
array(0) { }
PHP Notice: Use of undefined constant age - assumed 'age' in /home/Nb5Y8t/prog.php on line 4 PHP Notice: Undefined index: age in /home/Nb5Y8t/prog.php on line 4