Blank User-Agent Causes PHP Notices

Hey there!

First off I want to say great plugin!

Because we do development, we run WP_DEBUG with error display turned off and logging turned on, 24/7 on some of our sites.

Whenever the user agent is not defined the following notice shows up in our debug.log:

PHP Notice: Undefined index: HTTP_USER_AGENT in /XXXXXXX/wp-content/plugins/mailchimp-for-wp/includes/integrations/class-integration.php on line 60

Would you guys mind just adding a check such as if ( !empty( $_SERVER['HTTP_USER_AGENT'] ) ) to validate the $_SERVER['HTTP_USER_AGENT'] variable so those errors don’t show up in the logs? Thanks!

– Scott

https://wordpress.org/plugins/mailchimp-for-wp/