In the ~my_user_name/Sites/eCart/ folder create a new file named phpinfo.php. aded the following between the body tags:
<?php phpinfo(); ?>
the open a web browser and go to:
phpinfo.php
you should get information about your PHP server. If not, then the address for your server is not 127.0.0.1/ double check that you are using the correct address to access the server.