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<?php function array_key_match($target, $match) { $targetKeys = array_keys($target); $diff = array_diff($target, $match); return ($diff == array_diff($diff, $match)); } function test($target, $match, $expect) { return preg_replace('/\n/', '', sprintf( "Target %s, Match %s: %s\n", var_dump($target, true), var_dump($match, true), (array_key_match($target, $match) == $expect) ? 'true' : 'false' )); } print test([1, 2, 3, 4, 5], [2, 3], true); print test(['a', 'b', 'c'], ['c', 'b'], true); print test([1, 2, 3, 4, 5], [4, 5, 6], false);
Output for git.master, git.master_jit, rfc.property-hooks
array(5) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) } bool(true) array(2) { [0]=> int(2) [1]=> int(3) } bool(true) Target , Match : truearray(3) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" } bool(true) array(2) { [0]=> string(1) "c" [1]=> string(1) "b" } bool(true) Target , Match : truearray(5) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) } bool(true) array(3) { [0]=> int(4) [1]=> int(5) [2]=> int(6) } bool(true) Target , Match : false

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