Save timestamp in database

Code:

# user created timestamp
`created_at` timestamp default current_timestamp,

# user add or update timestamp
`updated_at` timestamp default current_timestamp on update current_timestamp,

# do not forget that you can add timestamp(6) etc.

For the timezone I found this article.

How to Detect User Timezone in PHP

Let me know if that works for you.

In your way,output is example 2018-2-2 12:10:20
But i save unix timestamp because need convert timestamp to user timezone