php sql插入没有结果

我不能用php进行插入查询。在SQL插入中。。工作

  $servername = "localhost";
    $username = "root";
    $password = "password";
    $dbname = "good_sc";
    $conn = mysqli_connect($servername, $username, $password, $dbname);
    if ($conn) 
    {
        die("conn established:"); //works fine
    }
    $sql = "INSERT INTO order_items (orderid,customerid,goodid,order_price,quantity)
    VALUES
    ( '59',
      '2',
      '4',
      '55.0',
      '4')";

    }
    if ($conn->query($sql) === TRUE) {
        echo "New record created successfully <br/>";
    } else 
    {
        echo "Error: " . $sql . "<br>" . $conn->error;
    }

---

更改if上的条件。 如果调用

die

，脚本执行将终止

$conn = mysqli_connect($servername, $username, $password, $dbname);
if (!$conn) 
{
    die("conn not established:"); //didnt work fine
}

---

因此，如果连接成功，您的脚本将死亡，并且您希望它在连接成功后做更多的事情？：-）谢谢谢谢谢谢谢谢

$conn = mysqli_connect($servername, $username, $password, $dbname);
if (!$conn) 
{
    die("conn not established:"); //didnt work fine
}

1) There is an extra closing braces(}) before start of if 
($conn->query($sql) === TRUE) statement.
2)  if ($conn)  should be replace by  if (!$conn) because when it return false then script should be terminate but in your condition script being terminate on success connection.