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run code in 200+ php & hhvm versions
Bugs & Features
<?php $arr = array(' foo ', ' bar ', ' baz '); var_dump($arr); $array = array_filter($arr, 'trim'); var_dump($arr);
Output for 4.3.0 - 7.2.0
array(3) { [0]=> string(5) " foo " [1]=> string(5) " bar " [2]=> string(5) " baz " } array(3) { [0]=> string(5) " foo " [1]=> string(5) " bar " [2]=> string(5) " baz " }