The value of session_id () in PHP is usually in the data inventory what type, how much length?

The value of session_id () in PHP is usually in the data inventory what type, how much length?

I now have a char (32)

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The value of session_id () in PHP is usually in the data inventory what type, how much length?

I now have a char (32)

Thinkphp was built in a table with varchar (255)

With varchar, I would normally fix MD5 (32) or SHA1 (40) encryption, in different cases with different lengths

usually varchar (255), so the scope of application is relatively wide, even if the length of the session_id change is not affected.

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