PHP會話未顯示

我試圖回顯我的會話，但未顯示。我認爲會話正在工作，因爲這是與其他頁面相同的代碼。唯一顯示的部分是文字...「你的ID是」和「聯盟主頁」。有人可以幫我弄清楚我的代碼有什麼問題嗎？PHP會話未顯示

<?php 
// this starts the session 
session_start(); 
$id = $_SESSION['userid']; 
echo "Your id is " . $id; 

//this connects to the database 
$con = mysql_connect("localhost","yourfan3_jeengle","armyjoe30"); 
mysql_select_db("yourfan3_demo", $con); 

//gets info for user 
$result = mysql_query("SELECT * FROM League_Info WHERE User_ID = '$id'"); 
$result2 = mysql_fetch_array($result); 
$leaguename = $result2['League']; 
echo $leaguename; 
//$result31 = $result2['Members']; 
//$result32 = $result2['League_Password']; 

//checks if league name exists 
$memberslist = mysql_query("SELECT User_ID FROM League_Info WHERE League = '$leaguename'"); 

?> 
<html> 
<head> 
</head> 

<body> 
League Home 
</body> 
</html>

來源

2012-08-05 John Doe

檢查錯誤日誌。是否有任何錯誤，警告或通知？ – icktoofay 2012-08-05 01:44:02

請停止使用古老的MySQL擴展編寫新代碼：它不再被維護，並且社區已經開始[棄用過程]（http://news.php.net/php.internals/53799）。相反，您應該使用改進的[MySQLi]（http://php.net/mysqli）擴展或[PDO]（http://php.net/pdo）抽象層。 – DavChana 2012-08-05 05:38:28