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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 array_spit(array $array) { return mb_substr(array_reduce( $array, function ($carry, $item) { return $carry . $item . ', '; }, '[' ), 0, -2) . ']'; } function test($target, $match, $expect) { return sprintf( "Target %s, Match %s: %s", array_spit($target), array_spit($match), (array_key_match($target, $match) == $expect) ? 'true' : 'false' ) . "\n"; } 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
Target [1, 2, 3, 4, 5], Match [2, 3]: true Target [a, b, c], Match [c, b]: true Target [1, 2, 3, 4, 5], Match [4, 5, 6]: false

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