I was wondering, where in Magento the visitors' HTTP User Agent Information is used. The log_visitor_info table is pretty big (and for me it seems the user agent information is useless?).

I grepped through the code and all I found were the following three usages:

  • Check for ignored user agents (anyway, not the stored user agent data but the one received from the helper) (see Mage_Log_Model_Visitor, _construct())
  • Adding the user agent information in (Mage_Log_Model_Visitor, initServerData())
  • Saving the visitor information (Mage_Log_Model_Resource_Visitor, _saveVisitorInfo())

Is there any other place (Reports, Menu item in the backend,...) where the HTTP user agent information is shown/needed?

  • 2
    I cannot see any other uses for it. It could be useful but I cannot see a current use. Jul 19, 2014 at 9:18
  • I thought the design exceptions in admin used this to match certain themes/packages/etc based on a user agent, but maybe I'm wrong, I'll have to look it up.
    – pspahn
    Jul 22, 2014 at 21:35
  • I would find it immensely useful to put on order receipts, as when a customer claims there is an error in the store it helps tremendously to know their OS/browser combination for troubleshooting/trying to replicate that. I've posted a question here: magento.stackexchange.com/questions/73956/… Jul 10, 2015 at 15:21

1 Answer 1


So firstly I cannot see anything that directly uses the user agent stored against the visitor log entry.

The package theme exceptions directly use the $_SERVER['HTTP_USER_AGENT'] value as with the other places that check user agent.

My best guess, and sorry that it is a guess, is that someone thought that maybe it might be useful to store this information. A shop owner may want to see how many visitors are using which browser, but I cannot see currently anything that does this.

  • Thanks for checking. It would make sense to use/view the data if it's stored (and not just filling up the database, if log is enabled). Jul 24, 2014 at 12:33

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