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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_match($match), (array_key_match($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 7.0.20, 7.1.5 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Call to undefined function array_match() in /in/67daX:21 Stack trace: #0 /in/67daX(28): test(Array, Array, true) #1 {main} thrown in /in/67daX on line 21
Process exited with code 255.
Output for 7.0.0 - 7.0.14, 7.1.0
Fatal error: Uncaught Error: Call to undefined function array_match() in /in/67daX:19 Stack trace: #0 /in/67daX(28): test(Array, Array, true) #1 {main} thrown in /in/67daX on line 19
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Call to undefined function array_match() in /in/67daX on line 21
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/67daX on line 28
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/67daX on line 11
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/67daX on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/67daX on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_ARRAY, expecting ')' in /in/67daX on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/67daX on line 9
Process exited with code 255.

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