Question

大家好，所以我试图允许用户在提交数据后对其进行编辑。我有一个人员表，设置了一个自动递增的主键。这是我的代码中的一点让我烦恼//getting id from url $StaffID = $_GET['StaffID'];我不能为我的生活弄清楚它有什么问题，因为语法似乎是正确的。它告诉我索引是未识别的。

<?php
// including the database connection file
include_once("connect.php");

if(isset($_POST['update']))
{   
    $StaffID = $_POST['StaffID'];



    // checking empty fields
    if(empty($Name) || empty($Address) || empty($Telephone) || empty($BusinessID)) {           
        if(empty($Name)) {
            echo "<font color='red'>Name field is empty.</font><br/>";
        }

        if(empty($Address)) {
            echo "<font color='red'>Age field is empty.</font><br/>";
        }

        if(empty($Telephone)) {
            echo "<font color='red'>Email field is empty.</font><br/>";
        }  

        if(empty($BusinessID)){
            echo "<font color='red'>Email field is empty.</font><br>/";
        }
    } else {   
        //updating the table
        $result = mysqli_query($conn, "UPDATE staff SET Name='$Name',Address='$Address',Telephone='$Telephone', BusinessID='$BusinessID' WHERE StaffID = $StaffID");

        //redirectig to the display page. In our case, it is index.php
        header("Location: HomePHP.php");
    }
}
?>
<?php
//getting id from url
$StaffID = $_GET['StaffID'];      // <---- ERROR

//selecting data associated with this particular id
$result = mysqli_query($conn, "SELECT * FROM staff WHERE StaffID=$StaffID");

while($res = mysqli_fetch_array($result))
{


    $Name = $res['Name'];
    $Address = $res['Address'];
    $Telephone = $res['Telephone'];
    $BusinessID = $res['BusinessID'];
}
?>

Answer 1

您应首先更改语法以防止SQL注入。我想你的问题将会得到解决。

无法编辑MySQL行

1 个答案: