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run code in 150+ php & hhvm versions
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<?php $arr1 = null; $arr2 = array(); $arr3 = array(1,2,3); var_dump((bool) $arr1); var_dump((bool) $arr2); var_dump((bool) $arr3);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(false) bool(false) bool(true)