<?php
$test = "9хме1";
if(preg_match("/[0-9]х?ме[0-1]/", $test)) {
    echo "WIN1\n";
}
switch($test) {
    case preg_match("/[0-9]х?ме[0-1]/", $test):
        echo "WIN2\n";
    case preg_match("/[0-9]х?ме[0-1]/", $test)==true:
        echo "WIN3\n";
}