Rowlf questions

Rowlf answers

• Is a confirmation screen necessary for an order form?
• What is the best way to do server-side output caching in PHP?
• Can we use just <a href="#"> for "back to top" button at bottom of the page?
• Delivering activity feed items in a moderately scalable way
• How to test CSS selector performance?
• How to make a website secured with https
• Extracting portions of a loaded page in PHP (RegEx)
• How do I tell if a variable is public or private from within a PHP class?