3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array( 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h' ); for($i =0;$i<3;$i++){ array_push($array, array_shift($array)) ; } print_r($array) ;
Output for 7.0.0 - 7.0.20, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Array ( [0] => d [1] => e [2] => f [3] => g [4] => h [5] => a [6] => b [7] => c )

preferences:
167.79 ms | 403 KiB | 215 Q