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Create a unique random token string in Yii for the users table.

I am working on a Yii application that requires the "users" table to contain a column token, which must be a unique random row based on that user in the table (for example, will never be the same twice).

Can anyone give me some advice on this, or is there already a Yii component / extension / generator for this.

Also - what is the most optimal db column type for this?

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I suggest to just use a hash that creates a long string and uses some very unique string for hashing:

sha512($userName.time().rand(1000, 9999));


Some lengths of hash hash algorithms

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I like to use CSecurityManager with generateRandomString()

for this. Please be aware that it generates a string that contains the characters ~ and _



The DB column will be varchar

with the length of your row length.

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