Here’s a quick tip on how to disable notices like this one appearing on your site:
Deprecated: Function eregi() is deprecated in…
At the top of your application (bootstrap or index file) just add the following line of PHP:
error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
This tells your application to show all errors EXCEPT for Notices and Deprecation errors. Obviously you can show Notices if you prefer by removing & ~E_NOTICE from that function
Hope this helps!