Top 7 PHP Security Blunders

For you PHP lovers (I know some of you):

Article on PHP security issues. Some of these issues are well known but it worth taking a look, especially if you are in the web business.
I will quote out of the article two interesting lines:

The most important thing is to develop a proper security mindset and to know
your tools well.

Remember: just because you're paranoid doesn't mean there's no one out to get
you.

http://www.sitepoint.com/article/php-security-blunders