This routine checks a client's IP address against a few open lists of blacklisted IP addresses, returns TRUE if the ip is a known proxy.

Returns an array of folder/file names in the specified path.

This little function will split an e-mail address passed to it at the @ sign, and make sure that there is a valid e-mail server at the other end =)

This will give you CheckDNSRR functionality in windows.

This function is only natively available in php while running on Linux.

Simple, but fast implementation of the Naive Sub-String Search Algorithm with my own enhancements written in Delphi.