How To Edit Php.ini File On Hostgator Webhost?

You cant, if you are on a shared host, you wont be able to change php.ini
But you can use .htaccess to do some of which, you would do trough php.ini
As such, you may want to read about it at: http://httpd.apache.org/docs/1.3/howto/h...
php.ini is usually located in the directory, where php was installed on the server.
You could also do something like:
< ?php
ini_set ('magic_quotes_gpc', 0);
?>
More information: http://php.net/ini_set/