This is a tutorial which tells the users how to build an advanced and efficient programs into their webpages. The author says to the users about the use of output buffering which helps the user to deal with it and describes several advanced usages of the output buffering feature. This tutorial explains the use of the http header that the users can add and modify the informations in it from their php script. This article provides info to the users that the http cookies are implemented using http headers.