Online PHP editor | refs for S5AdC

<?php $input = 'S1G5AB'; // given this $store = '5I6GAB'; // actually this $regex = implode('', array_map( function ($char) { static $map = ['S'=>'[S5]','5'=>'[S5]','1'=>'[1I]','I'=>'[1I]','G'=>'[6G]','6'=>'[6G]']; return array_key_exists($char, $map) ? $map[$char] : $char; }. str_split($input) )); echo $regex . PHP_EOL; echo (0 < preg_match("/$regex/", $store) ? 'Match' : 'No match');