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<?php $array = array('foo', ' '); echo "Before: \n\n" , var_dump($array); $array = array_filter($array); echo "\n\nAfter: \n\n" , var_dump($array);
Output for 4.3.0 - 5.6.25, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Before: array(2) { [0]=> string(3) "foo" [1]=> string(1) " " } After: array(2) { [0]=> string(3) "foo" [1]=> string(1) " " }