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run code in 150+ php & hhvm versions
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<?php $babies = FALSE; if (empty($babies)) { var_dump(TRUE); } else { var_dump(FALSE); }
Output for 4.3.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0RC5
bool(true)