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run code in 150+ php & hhvm versions
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<?php var_dump(pow("-2")); var_dump(pow("string"));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Warning: pow() expects exactly 2 parameters, 1 given in /in/Ku9aP on line 3 NULL Warning: pow() expects exactly 2 parameters, 1 given in /in/Ku9aP on line 5 NULL