<?php
session_start();
mysql_connect("localhost","root","1234");
mysql_select_db("newdb");
$strSQL = "SELECT * FROM member WHERE UserID = '".$_SESSION['UserID']."' ";
$objQuery = mysql_query($strSQL);
$objResult = mysql_fetch_array($objQuery);
echo $objResult["firstname"];
?>
Error
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at C:\AppServ\www\New folder\blank.php:1) in C:\AppServ\www\New folder\blank.php on line 2