PHP salt and hash SHA256 for login password

Question

I\'ve made encrypting of the password in my register script and they are stored in the database, and I have to use them to login, so I would want to use the unencrypted ones

Answer 1

You can't do that because you can not know the salt at a precise time. Below, a code who works in theory (not tested for the syntaxe)

When you insert :

$qry="INSERT INTO member VALUES('$username', '$hashed')";

And for retrieving user :

$qry="SELECT * FROM member WHERE username='$username' AND password='$hashed'";