PHP and sessions.Sessions are used to keep data or variable content across multiple pages without having to transmit via _POST or _GET. An example of a login system in which a value (for example, the user ID) is stored in the session........Read Full Text
Apple wields ultimate control over applications running on your iPhone. If it doesn't like an app it flips a "kill switch" that zaps an unpalatable iTunes App off your iPhone in a heart beat. At least that's the buzz today in the blogosphere about a line of code found inside Apple's iPhone 2.0 software by independent iPhone developer Jonathan Zdziarski.