Question

我有一个代码，如果按下按钮，应该从while循环中删除记录。我通过$ _GET传递值，但即使它显示数组（1），然后deletedID =“1”我的代码仍然无法正常结束直接进入else语句。你能帮帮我吗？

<?php
include "delete.php";

    echo "
    <table>
        <tr>
            <th>xXx</th>
            <th>Expense name</th>
            <th>Expense amount</th>
            <th>Expense date</th>
            <th>Expense month</th>
        </tr>";



//do while
$expResult = "SELECT * FROM expenses";
$result = mysqli_query($conn, $expResult);


  if (mysqli_num_rows($result) > 0) {
  // output data of each row
  while ($row = mysqli_fetch_assoc($result)) {
    //<td><a name='delete' href='?deletedId=$row[id]'>Delete</a></td> 
    //<td><button name'deletedId' method='POST' type='submit' 
  action='".delete($conn)."'>X</button></td>
    echo "
        <tr>

            <td><a name='delete' href='?deletedId=$row[id]'>Delete</a></td> 
            <td>" . $row["expName"]. "</td>
            <td>" . $row["expAmount"]. "</td>
            <td>" . $row["expDate"]. "</td>
            <td>" . $row["expMonth"]. "</td>
        </tr>";

 }

 } else {
 echo "0 results";
 }

    if(isset($_GET['deletedId'])) {
        $expDelete = $_GET["deletedId"];
        $sql = "DELETE FROM expenses WHERE id = '$expDelete'";
        $delete = mysqli_query($conn, $sql);
        echo "<meta http-equiv='refresh' content='0'>"; 
    }else {
        mysqli_error($conn);
        echo "wrong";
    }  

    echo "

    </table>

    ";

?>
</div>

Answer 1

在此处更改您的代码

if(isset($_GET['deleteId'])) {

按deletedId按钮

时，您发送delete而非Delete

Answer 2

您的代码问题似乎发生在这段代码中：

if(**isset($_GET['delete']**) > 1) {
    $expDelete = $_GET["deletedId"];
    $sql = "DELETE FROM expenses WHERE id = '$expDelete'";
    $delete = mysqli_query($conn, $sql);
} else {
    echo "wrong";
}

请执行var_dump（$ _ GET [＆＃39; delete＆＃39;]）;在你的if语句之前。那输出是什么？这是正确的结果吗？如果没有，请使用正确的更改$ _GET [＆＃39;删除＆＃39;]。可能是$ _GET [＆＃39; deleteID＆＃39;]？我不确定。如果您发布查询字符串，那么我们可以帮助您更好。

如何在while循环中处理删除

2 个答案: