highlight_file Syntax highlighting of a file mixedhighlight_file stringfilename boolreturn The highlight_file function prints out a syntax highlighted version of the code contained in filename using the colors defined in the built-in syntax highlighter for PHP. If the second parameter return is set to &true; then highlight_file will return the highlighted code as a string instead of printing it out. If the second parameter is not set to &true; then highlight_file will return &true; on success, &false; on failure. The return parameter became available in PHP 4.2.0. Before this time it behaved like the default, which is &false; Since PHP 4.2.1 this function is also affected by safe_mode and open_basedir. 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. Many servers are configured to automatically highlight files with a phps extension. For example, example.phps when viewed will show the syntax highlighted source of the file. To enable this, add this line to the &httpd.conf;: See also highlight_string.