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PHP Session
$_SESSION is a special array used to store information across the page requests a user makes during his visit to your website or web application. The most fundamental way to explain what a sessions is like is to imagine the following scenario:
You are working with an application. You open it, make some changes, and then you close it.
That is a session in it’s simplest form.
The example scenario is reminiscent of the process that happens when using a login system. The process can be extremely complicated or incredibly simple, as long as there is a value that persists between requests. Information stored in the session can be called upon at any time during the open session.
While there may be many users accessing the site at the same time, each with his own session, it’s thanks to unique IDs assigned and managed by PHP for each session that allows each user’s session to be available only to himself. Session information is stored on the server rather than the user’s computer (as cookie data is stored), which makes sessions more secure than traditional cookies for passing information between page requests.
In this article I’ll give you the low down on using sessions in PHP – how to create them, how to destroy them, and how to make sure they remain secure.
Using Sessions
Before you can to store information in a session, you have to start PHP’s session handling. This is done at the beginning of your PHP code, and must be done before any text, HTML, or JavaScript is sent to the browser. To start the session, you call the session_start() function in your first file:
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| By : Sarun
05th Dec, 2011 |
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Mobile technology
Demand for mobile content management increased as mobile devices became increasingly ubiquitous and sophisticated. MCMS technology initially focused on the business to consumer (B2C) mobile market place with ringtones, games, text-messaging, news, and other related content. Since, mobile content management systems have also taken root in business to business (B2B) and business to employee (B2E) situations, allowing companies to provide more timely information and functionality to business partners and mobile workforces in an increasingly efficient manner. A 2008 estimate put global revenue for mobile content management at US$8 billion.[2] |
By : Piyush
09th Dec, 2011 |
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