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PHP Mysql & Oracle


I am migrating a php / mysql website to php / oracle. our user authentication system uses the mysql encrypt function to store passwords, without specifying a salt.

Does anyone know how to encrypt the a php variable in the same way that mysql encrypt function does so that i can compare the password stored in the db & the user entered one. the php crypt function seems to take a salt as a argument but i dont know the salt that mysql uses.




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