怎样让这个blog.php页面显示登录的用户名呢？

我想让这个blog.php页面把登陆的用户名打印出来应该怎么写呢？

blog.php
include "cookie.php";
?>

cookie页面
 if(!(isset($_COOKIE['isLogin'])&&$_COOKIE['isLogin']==1)){
  echo '您还没有登陆呢！请您登陆';
 }else{
    echo '您是登陆的';
 }
?>

login.php
 $pdo=new PDO("mysql:host=localhost;dbname=t1;","root","");
 if(isset($_POST['submit'])){
 $stmt=$pdo->prepare("select id,username,password from user where username=? and password=?");
 $stmt->execute(array($_POST['username'],($_POST['password'])));
 if($stmt->rowCount()>0){
 list($id,$username)=$stmt->fetch(PDO::FETCH_NUM);
   $time=time()+24*60*60;
   setCookie("uid",$id,$time,"/");
   setCookie("username",$username,$time,"/");
   setCookie("isLogin",1,$time,"/");
   echo '<script>location="blog.php"</script>';
 }
 else{
  echo "登陆失败";
 }
 }
?>

回复讨论(解决方案)

blog.php 中加入

<?php if(!(isset($_COOKIE['isLogin'])&&$_COOKIE['isLogin']==1)){ 	echo '您还没有登陆呢！请您登陆'; }else{    echo '您是登陆的,用户名是：'.$_COOKIE['username']; }?>