[函数]php常用方法之返回json数据

function return_json($data, $is_exit = true) {
    $callback = $_GET['callback'] ?? '';
    if ($callback) {
        echo '' . $callback . "(" . json_encode($data, JSON_UNESCAPED_UNICODE) . ")";
    } else {
        echo json_encode($data, JSON_UNESCAPED_UNICODE);
    }
    if ($is_exit) exit();
}