Php Array Turkish Letter Sorting

When we want to sort directories in php by letter order, the letters with Turkish characters break the order. In php, you can use the function below to sort the array (array) according to the Turkish letter order.

function customSort($a, $b) {
static $charOrder = array('a', 'b', 'c', 'c', 'd', 'e', 'f', 'g', 'g', 'h', 'I', 'I', 'j', 'k', 'l', 'm', 'n', 'o', 'o', 'p', 'r', 's', 'S','t', 'u', 'u', 'v', 'y', 'z');

$a = mb_strtolower($a);
$b = mb_strtolower($b);

for($i=0;$i$valB) return 1;
return -1;
}

if(mb_strlen($a) == mb_strlen($b)) return 0;
if(mb_strlen($a) > mb_strlen($b)) return -1;
return 1;

}
$array = array('ceyhan','şanlıurfa','özkan','ismail','adana');
usort($array, 'customSort');

print_r($array);

//OUTPUT
//Array ( [0] => adana [1] => ceyhan [2] => ismail [3] => ozkan [4] => sanliurfa )