drupal::Error::Notice: Undefined index~

In drupal 7 , the error reporting settings in php.ini is overridden by the bootstrap sequence. Even error reporting changes in your htaccess won’t work… drupal force you to use E_ALL , the new standard for upcoming php 6

As result some modules may produce undefined variables that will be displayed as messages “Notice: Undefined index” or “Notice: Undefined variable” and your logs will grow insanely…

the solution is to add in your settings.php the line

 

ini_set('error_reporting', 'E_ALL ^ E_NOTICE');

to micmic the default behavior of php 5.2

http://www.citytree.be/blog/undefined-index-quick-fix-in-drupal7-error-reporting

 

You can also go tohttp://mydrupalsite.com/admin/config/development/logging and
adjust the options under “Error messages to display”