Syntax highlighting of a file using php highlight_file function

Prints out or returns a syntax highlighted version of the code contained in filename using the colors defined in the built-in syntax highlighter for PHP. Care should be taken when using the highlight_file() function to make sure that you do not inadvertently reveal sensitive information such as passwords or any other type of information that might create a potential security risk.

highlight_file ( string $filename [, bool $return = false  ] )

Example: Browser view : http://snaps.php.net/
Browser Source : http://snaps.php.net/index.php?source