urlmatch: Matches any URLs in a string of text

Looks for any URLs in a string of text and matches each one with a customizable <a> tag. Convenient for parsing user input where users are not expected to write HTML. The class finds URLs starting with 'http|https|ftp|www', ignores HTML tags, supports the addition of <a> properties (such as defining a CSS class), and supports a character limit for the displayed link text. I have tested it with many possibilities and it has been revised to support many URL-in-text scenarios but please don't hesitate to report any bugs to my above email address. To-Do: matching email addresses, if the need arises. Currently requires PHP >= 4.1.0 (uses array_key_exists() and foreach() )