Case insensitive method to make array unique.
Class: bb_main, called as $main
File: bb_main.php (php)
$unique_array = $main->array_iunique($array);
Returns: lowercase array that has been made unique case insensitive.
Note: php function
array_unique() is case sensitive.
$array (array of string)
Array to be made unique case insensitive, usually for testing.