使用服务器端时搜索和分页不起作用

问：

我正在使用数据表服务器端。我正在使用 ajax 获取记录。我的问题是，搜索和分页不起作用。我正在获取搜索和分页以及所有数据。

请查看下图，我每页显示 10 条记录，但它显示所有记录。

我在 StackOverflow 上检查了有关此主题的服务器问题。我几乎检查了每个问题，但仍然无法找到解决方案。

我正在使用以下代码

if($_REQUEST['action']=='adminList'){

$stmt = $pdo->prepare("SELECT count(*) FROM tbl_admin");
$stmt->execute();
$totalRecords = $stmt->fetchColumn();
$query="SELECT `admin_id`, `a_firstname`, `a_lastname`, `a_email`,  `date_of_created` FROM `tbl_admin` WHERE is_active = 1 order by date_of_created DESC";

try {
      $stmt = $pdo->prepare($query);
      $stmt->execute();
      $result = $stmt->fetchAll();
             
      $data['data'] = [];
      foreach ($result as $row) {

        $arr_result = array(
                    //"id" =>$i++,
                    "name" =>$row['a_firstname'].' '.$row['a_lastname'],
                    "email" => $row['a_email'],
                    "date_of_created" => $row['date_of_created'],
        );


        $data['data'][] = $arr_result;
                }

                
                }
                catch(PDOException $e) {
                    echo "Error: " . $e->getMessage();
                }

$json_data = array(  
"draw"=> intval( $_REQUEST['draw'] ),
"recordsTotal"    => intval($totalRecords),  
"recordsFiltered" => intval($totalRecords),
"data"            => $data['data']
);

// echo "<pre>";
 //print_r($json_data);
echo json_encode($json_data);
//exit();
}

JS公司

$(document).ready(function() {
  var dataTable = $('#adminList').DataTable({
    "processing": true,
    "serverSide": true,
    "paging": true,
    "searchable": true,
    "ajax": {
      url: "fetch.php",
      type: "post",
      data: {
        action: "adminList"
      }
    },
    language: {
      sLengthMenu: "Show _MENU_", // remove entries text
      searchPlaceholder: "Search",
      emptyTable: "No record found",
      search: ""
    },
    "pageLength": 10,
    "paging": true,
    "columns": [{
        "data": "name"
      },
      {
        "data": "email"
      },
      {
        "data": "date_of_created"
      }
    ]
  });
});

这是我的输出

Array
(
    [draw] => 1
    [recordsTotal] => 17
    [recordsFiltered] => 17
    [data] => Array
        (
    // getting my all records
)
)

谁能帮我解决我的代码有什么问题？