3v4l.org

run code in 300+ PHP versions simultaneously
<?php $aaa = $bbb = array(1, 2, 3); foreach ($aaa as $a) { $bbb[]; }
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.34
Fatal error: Cannot use [] for reading in /in/eEZmK on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot use [] for reading in /in/eEZmK on line 5
preferences:
237.43 ms | 1395 KiB | 124 Q