php copy an array into $_SESSION

I have user information which I need to use in different places on the web application, stuff such as email, name, user settings, and so on and so forth.

The question I want to ask, is it wise to do so, or is it a huge waste of memory? and if it's not wise to do so, are there 开发者_如何学运维other things which I can do which could solve my problem?

Thank you.

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Store anything you need there, as long as you remember that it is kept on the server and will be retrieved for each page load in the session.

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It's usually considered bad practice to store too much in the session as the house-keeping that the server has to perform starts to add up when you've got many users. You only really need to store a user id in the session then you can pull everything else out of a database.

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