PHP Manual . ... PHP 4 >= 4.0.0) highlight_file -- Syntax highlighting of a file . ... The highlight_file() function prints out a syntax higlighted version of the code contained in filename using the colors defined in the built-in syntax highlighter for PHP. ... To setup a URL that can code hightlight any script that you pass to it, we will make use of the "ForceType" directive in Apache to generate a nice URL pattern, and use the function highlight_file() to show a nice looking code list. ...