public static function arr_merge(array $arr1, array $arr2)
{
$total = func_num_args();
$result = array();
for ($i = 0; $i < $total; $i++) {
foreach (func_get_arg($i) as $key => $val) {
if (isset($result[$key])) {
if (is_array($val)) {
// Arrays are merged recursively
$result[$key] = Tart_Request::arr_merge($result[$key], $val);
} elseif (is_int($key)) {
// Indexed arrays are appended
array_push($result, $val);
} else {
// Associative arrays are replaced
$result[$key] = $val;
}
} else {
// New values are added
$result[$key] = $val;
}
}
}
return $result;
}