session_start（）;
require_once（‘conn.php‘）;
$key_word?=?@?$_POST[‘key_word‘];
?>


????tle>系統(tǒng)后臺tle>
????nk?type=“text/css“?rel=“stylesheet“?href=“css/backstage.css“>



????
????????????????????if（@?$_SESSION[‘user_name‘]?==?““）
????????????{
????????????????echo?“ript>alert（‘您還沒有登錄，請先登錄!‘）;history.back（）;ript>“;
????????????????exit;
????????????}
????????????else
????????????{
????????????????$user_name?=?$_SESSION[‘user_name‘];
????????????????echo?“管理員：[$user_name]?歡迎您！  注銷用戶“;
????????????}
?????????>
????