No, the software doesn't have support for PHP. In fact, it will never have support for this file. The PHP is the file format used by PHP programming language. It's a file that is placed on servers and interpreted by Apache and PHP. To find more about it, access the official website: http://php.net/manual/en/book.fileinfo.php
American Greetings software uses graphical files to create content, files like JPG, BMP, PNG, GIF, etc.