3v4l.org

run code in 300+ PHP versions simultaneously
<?php $filtered = []; foreach ([NULL, TRUE, FALSE, 0, 1, 'none'] as $v) { $filtered[$v == 'none'][] = $v; } var_export($filtered);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
array ( 0 => array ( 0 => NULL, 1 => false, 2 => 0, 3 => 1, ), 1 => array ( 0 => true, 1 => 'none', ), )
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
array ( 0 => array ( 0 => NULL, 1 => false, 2 => 1, ), 1 => array ( 0 => true, 1 => 0, 2 => 'none', ), )
preferences:
144.23 ms | 408 KiB | 5 Q