Changes the case of all keys in an array
Syntax
array_change_key_case ( array $array [, int $case = CASE_LOWER ] ) : array
Parameters
array
The array to work on
case
Either CASE_UPPER or CASE_LOWER (default)
Return
Returns an array with its keys lower or uppercased, or FALSE if array is not an array.
Examples
1 · array
<?
$array = array("zErO" => 0, "oNe" => 1);
$return = array_change_key_case($array);
print_r($return);
?>
Array
(
[zero] => 0
[one] => 1
)
2 · case
<?
$array = array("zErO" => 0, "oNe" => 1);
$case = CASE_UPPER;
$return = array_change_key_case($array, $case);
print_r($return);
?>
Array
(
[ZERO] => 0
[ONE] => 1
)
