Notes about the PHPS file extension:
Errors in your registry are one of the common causes for incorrect file associations on your windows system. It is highly recommended that you
check your registry for file association errors (will also check for any other registry errors).
The PHPS file type is primarily associated with 'PHP Source' by The PHP Group. Generally, PHP files will get interpreted by the Web server and PHP executable, and you will never see the code behind the PHP file. If you make the file extension .PHPS, a properly-configured server will output a color-formated version of the source instead of the HTML that would normally be generated. Not all servers are so configured.
Detailed information for file extension PHPS:
File classification: Source Code
Mime type: text/html, application/x-httpd-php-source, application/x-httpd-php3-source