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run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo($var) { } $b = array(); foo($b['b']); var_dump(array_key_exists('b', $b));
Output for 5.3.0 - 7.2.0
Notice: Undefined index: b in /in/IAJMO on line 5 bool(false)
Output for 4.3.0 - 5.2.17
Notice: Undefined index: b in /in/IAJMO on line 5 bool(false)