3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array_0 = ['foo']; $array_1 = ['bar']; for ($i = 0; $i <= 1; $i++) { print_r(${'array_' . $i}); // Here we "build" the variable name }
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 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
Array ( [0] => foo ) Array ( [0] => bar )
preferences:
95.81 ms | 1493 KiB | 4 Q