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run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(($a != NULL) && ((bool)$a == NULL));
based on kO6Tp
Output for 5.0.4 - 7.2.0
Notice: Undefined variable: a in /in/uEKXF on line 2 bool(false)
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: a in /in/uEKXF on line 2 bool(false)