PHP鏈接插入數據

<?php 
    $servername = "localhost:3305"; //數據庫地址
    $username = "root";    //數據庫name
    $password ="";     //密碼
    $dbname      ="myDB";  //要鏈接的數據庫

    $conn = new mysqli($servername,$username,$password,$dbname);
    // 面向對象的鏈接數據方法

    if($conn ->connect_error)
    {
        die('鏈接失敗:' . $conn ->connect_error);
    }

    // 插入數據
    $sql = "INSERT INTO MyGuests (firstname, lastname, email)
    VALUES ('John', 'Doe', '[email protected]');";
    $sql .= "INSERT INTO MyGuests (firstname, lastname, email)
    VALUES ('Mary', 'Moe', '[email protected]');";
    $sql .= "INSERT INTO MyGuests (firstname, lastname, email)
    VALUES ('Julie', 'Dooley', '[email protected]')";


    if($conn ->multi_query($sql) === TRUE)
    {
        //判斷 爲true時 新紀錄插入成功
        echo "新紀錄插入成功";
    }else
    {
        echo "ERROR" . $sql . "<br>".$conn ->error;
    }


 ?>