Knowledge Base Contributions

Below is a list of the knowledge base entries that David Croft has contributed to:

• How can I print a dollar sign in a string?
  How can I format currency properly in PHP?
  

• How can I parse a a querystring like file.php/query rather that file.php?query
  

• How can I work out what version of PHP I'm using?
  

• How do I prevent a file from being included twice?
  Is there an equivalent to C's #IFNDEF?