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run code in 150+ php & hhvm versions
Bugs & Features
<?php $param = array(); test($param['err']); function test($foo = 'ru') { var_dump($foo); }
Output for 5.5.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined index: err in /in/YmeKF on line 3 NULL
Output for 4.3.0 - 5.4.45
NULL