3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'CG-123-456'; var_dump(preg_split('/CG\-\d+\-\d+/', $a));
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
array(2) { [0]=> string(0) "" [1]=> string(0) "" }
preferences:
206.78 ms | 404 KiB | 332 Q