Description
array
array_change_key_case ( array input [, int case] )
array_change_key_case() changes the
keys in the input array to
be all lowercase or uppercase. The change depends
on the last optional case
parameter. You can pass two constants there,
CASE_UPPER and
CASE_LOWER. The default is
CASE_LOWER. The function will leave
number indices as is.
Example 1. array_change_key_case() example
<?php
$input_array = array("FirSt" => 1, "SecOnd" => 4);
print_r(array_change_key_case($input_array, CASE_UPPER));
?>
|
The above example will output: Array
(
[FIRST] => 1
[SECOND] => 4
) |
|
If an array has indices that will be the same once run through this
function (e.g. "keY" and "kEY"), the value that is later in the array
will override other indices.
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