3v4l.org

run code in 300+ PHP versions simultaneously
<?php $original = "original"; $generatedPath = array( "/^(?!".$original."$).+$/", '/^(?![0-9]_[0-9]*x[0-9]*$).+$/' ); $test = array('products', 'categories', 'original', '1_22x44','1_22x44a'); foreach ($test as $t) { foreach($generatedPath as $pattern) { if(preg_match($pattern, $t)) { echo $pattern.':'.$t ."\r\n"; } } }

preferences:
35.67 ms | 402 KiB | 5 Q