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run code in 150+ php & hhvm versions
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<?php class Test { } $o = new Test($a=9); var_dump($a);
Output for hhvm-3.10.0 - 3.12.0, 7.1.0
int(9)
Output for 5.0.4 - 5.6.28, 7.0.0 - 7.0.14
Notice: Undefined variable: a in /in/IHuIe on line 5 NULL
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: a in /in/IHuIe on line 5 NULL