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<?php function append(array $init, array $add, $key = null, $initialKeyExist = true) { $_init = $init; if (is_null($key)) { foreach ($add as $key => $value) $_init[$key] = $value; return array_merge($_init, $init); } else { if ($initialKeyExist) { $_init[$key] = $add; return [ $key => array_merge($_init[$key], $init[$key]) ]; } else { $init[$key] = array(); $_init[$key] = $add; return [ $key => array_merge($_init, $init) ]; } } } $a = [ 'phone' => [ 'code' => '+38', ], ]; $b = [ 'prefix' => '095', 'number' => '7700418', ]; var_dump(append($a, $b, 'phone')); $a = [ 'code' => '+38', ]; $b = [ 'prefix' => '095', 'number' => '7700418', ]; var_dump(append($a, $b)); $a = [ 'phone' => [ 'code' => '+38', ], ]; $b = [ 'prefix' => '095', 'number' => '7700418', ]; var_dump(append($a, $b, 'full'));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(1) { ["phone"]=> array(3) { ["prefix"]=> string(3) "095" ["number"]=> string(7) "7700418" ["code"]=> string(3) "+38" } } array(3) { ["code"]=> string(3) "+38" ["prefix"]=> string(3) "095" ["number"]=> string(7) "7700418" } Warning: Undefined array key "full" in /in/7Kt44 on line 13 Fatal error: Uncaught TypeError: array_merge(): Argument #2 must be of type array, null given in /in/7Kt44:13 Stack trace: #0 /in/7Kt44(13): array_merge(Array, NULL) #1 /in/7Kt44(56): append(Array, Array, 'full') #2 {main} thrown in /in/7Kt44 on line 13
Process exited with code 255.
Output for 7.3.12 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
array(1) { ["phone"]=> array(3) { ["prefix"]=> string(3) "095" ["number"]=> string(7) "7700418" ["code"]=> string(3) "+38" } } array(3) { ["code"]=> string(3) "+38" ["prefix"]=> string(3) "095" ["number"]=> string(7) "7700418" } Notice: Undefined index: full in /in/7Kt44 on line 13 Warning: array_merge(): Expected parameter 2 to be an array, null given in /in/7Kt44 on line 13 array(1) { ["full"]=> NULL }
Output for 7.3.32 - 7.3.33, 7.4.26
array(1) { ["phone"]=> array(3) { ["prefix"]=> string(3) "095" ["number"]=> string(7) "7700418" ["code"]=> string(3) "+38" } } array(3) { ["code"]=> string(3) "+38" ["prefix"]=> string(3) "095" ["number"]=> string(7) "7700418" } Warning: array_merge(): Expected parameter 2 to be an array, null given in /in/7Kt44 on line 13 array(1) { ["full"]=> NULL }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33
array(1) { ["phone"]=> array(3) { ["prefix"]=> string(3) "095" ["number"]=> string(7) "7700418" ["code"]=> string(3) "+38" } } array(3) { ["code"]=> string(3) "+38" ["prefix"]=> string(3) "095" ["number"]=> string(7) "7700418" } Notice: Undefined index: full in /in/7Kt44 on line 13 Warning: array_merge(): Argument #2 is not an array in /in/7Kt44 on line 13 array(1) { ["full"]=> NULL }
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/7Kt44 on line 12
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/7Kt44 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/7Kt44 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/7Kt44 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/7Kt44 on line 2
Process exited with code 255.

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