Remove a key in the array using dot notation for nested arrays
array_unset(array $array, string $key): voidarray
The input array
key
The key to unset. This can include dot notation for setting values in a nested array.
Example # 1 Example uses of array_unset() for normal keys
$array = ['a' => 1, 'b' => 2, 'c' => 3];
array_unset($array, 'b');
print_r($array);The above example will output:
Array
(
[a] => 1
[c] => 3
)
Example # 2 Example uses of array_unset() for nested keys
$array = ['a' => 1, 'b' => ['a' => 1, 'b' => 2, 'c' => 3], 'c' => 3];
array_unset($array, 'b.b');
print_r($array);The above example will output:
Array
(
[a] => 1
[b] => Array
(
[a] => 1
[c] => 3
)
[c] => 3
)