3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr=array(5=>1, 12 =>2); $arr[]=56; $arr["x"]=42; unset($arr[5]); unset($arr); ?>
Output for 5.6.38, 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 - 8.2.18, 8.3.0 - 8.3.7
preferences:
242.56 ms | 404 KiB | 248 Q