Top Answers

1. Enabling/installing GD extension? --without-gd
   95 votes
2. Using PHP/Apache to restrict access to static files (html, css, img, etc)
   37 votes
3. How does CodeIgniter know a cookie holds valid session data?
   10 votes
4. How to install wkhtmltopdf on a linux based (shared hosting) web server
   3 votes