使用ajax实现一个简单的删除功能，但是php文件中接收不到id值

Question

test.html:
function del(id) {

    if(confirm("确定删除？")){
        $.ajax({
            url:"/app/controller/Del.php/" +id,
            success:function () {
                alert("删除成功");
            },
            error:function () {
            }
            }

        );
    }

}

Del.php:
public function del(){
$id_arr = isset($_GET['id']);

    $result =  Db::table('user')->where('id',$id_arr)->delete();

    //print_r($id_arr);

    if($result){
        echo json_encode(array("code"=>200));
    }else{
        echo json_encode(array('code'=>400));
    }

}

这是目录结构

index.php:
public function test(){

    $All = Db::table('user')->select()->toArray();
    $id = array_column($All,'id');
    $name = array_column($All,'name');
    $pwd = array_column($All,'pwd');

    /*Db::table('user')->where('id',3)->delete();*/

   /* $id_arr = isset($_GET['id']) ;

    Db::table('user')->where('id',$id_arr)->delete();

    print_r($id_arr);*/

test.html:

<table class="layui-table" id="demo" lay-filter="demo">
    <colgroup>
        <col width="150">
        <col width="200">
        <col>
    </colgroup>
    <thead>
    <tr>
        <th id="id" width="100px">ID<i class="layui-icon layui-icon-cols" style="font-size: 30px; color: #1E9FFF;"></i></th>
        <th width="400px">姓名<i class="layui-icon layui-icon-username" style="font-size: 30px; color: #1E9FFF;"></i> </th>
        <th width="400px">密码<i class="layui-icon layui-icon-password" style="font-size: 30px; color: #1E9FFF;"></i></th>
        <th width="400px">操作</th>
    </tr>
    </thead>
    <tbody>
    <tr>
        {foreach $All as $key=>$nv}
    <tr>
        <th>
            {$nv.id}
        </th>
        <th>
            {$nv.name}
        </th>
        <th>
            {$nv.pwd}
        </th>
        <th>
            <a class="layui-btn layui-btn-primary layui-btn-xs" lay-event="detail" data-type="getCheckData" onclick="show()" >查看</a>
            <a class="layui-btn layui-btn-xs" lay-event="edit">编辑</a>
            <a class="layui-btn layui-btn-danger layui-btn-xs" lay-event="del" onclick="del()">删除</a>
            <!--<a href="{:url('index/test',['id'=>$nv.id])}">删除</a>-->
        </th>
    </tr>
    {/foreach}
    </tr>

    </tbody>






</table>

   View::assign('All',$All);
   View::assign('arrayid',$id);
   View::assign('arrayname',$name);
   View::assign('arraypwd',$pwd);

    return View::fetch();
}

Answer 1

url:"/app/controller/Del.php?id=" +id,