It should return a boolean instead of a string.

It should return a boolean instead of a string. The format lack of consistency and while it could technically identify some bots, it should have more test to identify if it is a bot or not, maybe a better tool could be a JS oriented one, but server-side can do more than just search for 'bot' in the user agent.

This little function works great for me....thats the reason i decided to share here....yes it should be a boolean....but it works this way....remember son....the simple, the better

If you wanted simple, then you could have used a function which would then only be loaded when called, instead of the Class taking up memory all of the time (especially if auto-loaded).