AJAX+PHP实现无刷新提交form表单的实例代码

ajax.php:

姓名：

年龄：

性别：




ajax_output.php:
      $username = $_POST['user_name'];
      $userage = $_POST['user_age'];
      $usersex = $_POST['user_sex'];
   echo "$username
";
   echo "$userage
";
   echo "$usersex
";
   $db = new mysqli('localhost','root','123456','test');
   if(!$db){
    echo "连接失败！";
   }
   $db->query("set names utf8");
   $query = "insert into userinfo(uname,uage,usex) values ('".$username."','".$userage."','".$usersex."')";
   $result = $db->query($query);
   if ($result){
    echo "上传成功！";
   }
   else {
    echo "失败！";
   }
   $db->close();


?>