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<?php $arr = array("A" => "aa", "B" => ["A" => "aaa", "B" => "bb"], "C" => "cc", "D" => ["E" =>"ee"]); function array_filter_recursive(array &$array, callable $callback) { foreach ($array as $key => &$value) { if ($callback($key, $value)) unset($array[$key]); else if (is_array($value)) array_filter_recursive($value, $callback); } } function sanitizedArray(&$arr, $restrictedProperties) { foreach($restrictedProperties as $prop) { array_filter_recursive($arr, function($k, $v) use ($prop) {return $prop == $k;}); } } sanitizedArray($arr, ["D"]); print_r($arr);
Output for 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 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.30, 8.0.0 - 8.0.20, 8.1.0 - 8.1.7
Array ( [A] => aa [B] => Array ( [A] => aaa [B] => bb ) [C] => cc )
Output for 4.4.2 - 4.4.9, 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/05tc7 on line 3
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/05tc7 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/05tc7 on line 3
Process exited with code 255.

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