Question

我有一个数据表，该数据表是通过SQL提取到DataTables中的。我想使用AJAX运行SQL查询，该查询基于$id = $row["id"];删除了行。

Index.php：

$link = mysqli_connect("localhost", "bradlyspicer_root", "", "bradlyspicer_ResellerDB");

$id = $_POST['id'];
$deleterow = "DELETE FROM Offences WHERE id = ?";
    if($stmt = mysqli_prepare($link, $deleterow)){ // $link being your connection
        mysqli_stmt_bind_param($stmt, "s", $id);
        mysqli_stmt_execute($stmt);
        echo 'success';
        echo $id;
    } else {
        echo 'fail!';
        printf("Error: %s.\n", mysqli_stmt_error($stmt));
    }

Functions.php：

$id = $_POST['id'];
$deleterow = "DELETE FROM Offences WHERE id = ?";
    if($stmt = mysqli_prepare($link, $deleterow)){ // $link being your connection
        mysqli_stmt_bind_param($stmt, "s", $id);
        mysqli_stmt_execute($stmt);
        echo 'success';
    } else {
        echo 'fail!';
        printf("Error: %s.\n", mysqli_stmt_error($stmt));
    }

Custom.js：

$( ".delbtn" ).click(function(){
    var itemID = $(this).attr("itemID");
    console.log(itemID)
    $.ajax({
        url:"functions.php", //the page containing php script
        data: { id: itemID}, // itemID passed as id
        type: "POST", //request type
        success:function(result){
            alert(result);
        },
        error: function() {
            alert('Error occured');
        }
    });
});

我找不到从$ Index.php到$ Functions.php的按钮中的$ id传递给我的地方，

更新：由于更新了脚本并尝试进行调试，因此输出的错误没有得到太多响应：

fail!Error: .

Answer 1

Index.php：

添加一个删除按钮标识符类delbtn和一个数据属性，该属性携带该行的ID data-itemID

<?php
    while($row = mysqli_fetch_array($dataTablesResult)){
        $id = $row["id"];
        echo '
        <tr>
          <td>
            <button type="button" data-itemID="'.$id.'" class="delbtn btn btn-danger" >Remove</button>
          </td>
        </tr>
        ';
    }
?>

Functions.php：

ajax发送的捕获$_POST['id']

$id = $_POST['id'];
$deleterow = "DELETE FROM Offences WHERE id = ?";
if($stmt = mysqli_prepare($link, $deleterow)){ // $link being your connection
    mysqli_stmt_bind_param($stmt, "s", $id);
    mysqli_stmt_execute($stmt);
}

Custom.js：

单击具有.delbtn类的按钮时，运行jQuery函数。从数据属性中捕获行ID并将其存储为$(this).data("itemID")。然后在ajax请求中使用data: { id: itemID}发送数据

$(".delbtn").click(function(){
    itemID = $(this).data("itemID");
    $.ajax({
        url:"functions.php", //the page containing php script
        data: { id: itemID}, // itemID passed as id
        type: "POST", //request type
        success:function(result){
            alert(result);
        }
    });
});

Answer 2

我想如果您更改此行：

mysqli_stmt_bind_param($stmt, "s", $id);

这是一个：

mysqli_stmt_bind_param($stmt, "i", $id);

可能有效

如何使用Ajax在php while循环中运行SQL查询？

2 个答案: