3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '72'; if(isset($a)) { if(is_array($a)) { if(array_key_exists('ErrorTable', $a)) { echo 'Array, and ErrorTable key exists.'; } else { echo 'Array, but ErrorTable key does not exist.'; } } else { echo 'Is not array, but is set.'; } } else { echo 'Not set at all.'; }
Output for 4.3.0 - 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 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 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 - 8.3.6
Is not array, but is set.
preferences:
291.89 ms | 406 KiB | 460 Q