3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = ['a','b','c','d','e','f']; for($i=count($arr)-1;$i>=0;$i--){ $arr[]=$arr[$i]; unset($arr[$i]); } print_r($arr);

This is an error 500

Value for `_results` contains invalid data `array`


preferences:
195.48 ms | 2618 KiB | 11 Q