- Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- string(18) "Medium # Large #"
<?php
$string = 'Medium 4Y3FT129# Large 4Y3FT119#';
var_dump(preg_replace('~(([A-Z0-9])*#)~', ' #', $string));