3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = '"Cat1","Cat2","Cat3"'; echo implode(',', array_pad(explode(',', $str), 6, '""'));
Output for 8.1.32 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
"Cat1","Cat2","Cat3","","",""
preferences:
54 ms | 845 KiB | 4 Q