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40+ Invaluable PHP Tutorials and Resources

PHP is one of the most popular scripting languages on the internet today, and one of the easiest to get into. Whether you’re a PHP newbie, or an experienced code-slinger, there is always something new to discover. A function you’re unfamiliar with a killer timesaving tool, a technique that you forgot about… http://net.tutsplus.com/articles/web-roundups/40-invaluable-php-tutorials-and-resources/
http://lcamtuf.blogspot.com/2010/10/http-cookies-or-how-not-to-design.html

HTTP cookies, or how not to design protocols

For as long as I remember, HTTP cookies have been vilified as a grave threat to the privacy of online browsing; wrongly so . That said, the mechanism itself is a very interesting cautionary tale for security engineers - and that will be the theme of today's feature. Cookies were devised by Lou Montulli , a Netscape engineer, somewhere in 1994.