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<?php function mergeArray(array $arr1, array $arr2) { $keysStats = array(); foreach ($arr1 as $index => $key) { $keysStats[$key] = array( 'arr1' => $index, 'arr2' => null ); } foreach ($arr2 as $index => $key) { if (!array_key_exists($keysStats[$key])) { $keysStats[$key] = array( 'arr1' => null, 'arr2' => $index ); } else { $keysStats[$key]['arr2'] = $index; } } $allKeys = array_keys($keysStats); sort($allKeys); $merged = array(); foreach ($allKeys as $key) { if (is_null($keysStats[$key]['arr2'])) { $merged[] = null; } else { $merged[] = $arr2[$keysStats[$key]['arr2']]; } } return $merged; } var_dump(mergeArray( array( 'a', 'b', 'c', 'd', 'e', 'f', 'g' ), array( 'a', 'b', 'z', 'q' ) ));
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught ArgumentCountError: array_key_exists() expects exactly 2 arguments, 1 given in /in/ulZSM:13 Stack trace: #0 /in/ulZSM(13): array_key_exists(Array) #1 /in/ulZSM(39): mergeArray(Array, Array) #2 {main} thrown in /in/ulZSM on line 13
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Fatal error: Uncaught ArgumentCountError: array_key_exists() expects exactly 2 arguments, 1 given in /in/ulZSM:13 Stack trace: #0 /in/ulZSM(13): array_key_exists(Array) #1 /in/ulZSM(44): mergeArray(Array, Array) #2 {main} thrown in /in/ulZSM on line 13
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Warning: array_key_exists() expects exactly 2 parameters, 1 given in /in/ulZSM on line 13 Warning: array_key_exists() expects exactly 2 parameters, 1 given in /in/ulZSM on line 13 Notice: Undefined index: z in /in/ulZSM on line 13 Warning: array_key_exists() expects exactly 2 parameters, 1 given in /in/ulZSM on line 13 Notice: Undefined index: q in /in/ulZSM on line 13 Warning: array_key_exists() expects exactly 2 parameters, 1 given in /in/ulZSM on line 13 array(9) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> NULL [3]=> NULL [4]=> NULL [5]=> NULL [6]=> NULL [7]=> string(1) "q" [8]=> string(1) "z" }
Output for 7.3.32 - 7.3.33
Warning: array_key_exists() expects exactly 2 parameters, 1 given in /in/ulZSM on line 13 Warning: array_key_exists() expects exactly 2 parameters, 1 given in /in/ulZSM on line 13 Warning: array_key_exists() expects exactly 2 parameters, 1 given in /in/ulZSM on line 13 Warning: array_key_exists() expects exactly 2 parameters, 1 given in /in/ulZSM on line 13 array(9) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> NULL [3]=> NULL [4]=> NULL [5]=> NULL [6]=> NULL [7]=> string(1) "q" [8]=> string(1) "z" }
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Wrong parameter count for array_key_exists() in /in/ulZSM on line 13 Warning: Wrong parameter count for array_key_exists() in /in/ulZSM on line 13 Notice: Undefined index: z in /in/ulZSM on line 13 Warning: Wrong parameter count for array_key_exists() in /in/ulZSM on line 13 Notice: Undefined index: q in /in/ulZSM on line 13 Warning: Wrong parameter count for array_key_exists() in /in/ulZSM on line 13 array(9) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> NULL [3]=> NULL [4]=> NULL [5]=> NULL [6]=> NULL [7]=> string(1) "q" [8]=> string(1) "z" }
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/ulZSM on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/ulZSM on line 2
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/ulZSM on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/ulZSM on line 2
Process exited with code 255.
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