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run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array( array( array() ), array() ); $filter = array_filter($arr); print_r($filter); var_dump(empty($filter));
based on LUiqp
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => Array ( [0] => Array ( ) ) ) bool(false)