mysql-PHPMySQLUpdate修改数据库失败,无警告报错:mysqlphpupdate if(isset($_POST['submit'])&& $_POST['submit']) { $UID=$_GET['ID']; $name=$_POST['uname']; $phone=$_POST['phone']; $email=$_POST['email']; $servername=localhost; $username = root; $password = ; $dbname = records; //