Loggin User Activity

Hi,

Is there any built-in library or composer library for user activity logging ? I'm using MySQL database. 

I want to log every activity in my application such as "user login, logout activities", "any changing personal information".

A library for 10 lines of code?

A library for 10 lines of code?

More then 10 lines

But its done.

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Well done =)

for CI3

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More than 10 lines? Explain

2015