Here is the page you were looking for. I found it from Google. It has all the WWW statistics for last year and so on...
And who is that guy saying "PHP isn't secure!!" How dumb is he??!! PHP is way more secure and reliable compared to ASP. And yes everyone uses PHP. Look at all the big companies. Apple, Google and thousands of more... If you see him next time just tell him to search on PHP and then decide whether PHP is good or ASP. (Don't take it personally, it's just him making wrong image of something in Client's mind. And I AM NOT PHP FAN or anything like that. It's just...)
Hope you find someone who can do it!