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<?php function atLeastTwoNotNull() { var_dump(count(array_filter(func_get_args(), 'is_null'))); return (count(array_filter(func_get_args(), 'is_null')) < 2); } $a = null; $b = true; $c = false; $d = null; $e = null; var_dump(atLeastTwoNotNull($a, $b, $c, $d, $e));
Output for 4.3.0 - 5.6.25, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(3) bool(false)