PHP key array function
Last Updated: February 20, 2022
key – Fetch key from the array. Key of the current index position
Syntax
key(array|object $array): int|string|null
Supports (PHP 4 , PHP 5, PHP 7, PHP 8)
Parameters
Parameter | Description |
array | target array |
Return Value
The key() function simply returns the key of the array element that’s currently being pointed to by the internal pointer.
Example
$my_array = array("a" => "One","b" => "Two", "c" => "Three");
next($my_array);
echo key($my_array);
Output
b