PHP Password hashing demo.

php-password-hashing-demo.php

<?php
    function register($user, $password) {
        
        $hash = password_hash($password, PASSWORD_BCRYPT);
        $this->store($user, $hash);
    }

    function login($user, $password) {
        
        $hash = $this->fetchHash($user);

        if (password_verify($password, $hash)) {

            if (password_needs_rehash($hash, PASSWORD_BCRYPT)) {

                $hash = password_hash($password, PASSWORD_BCRYPT);
                $this->store($user, $hash);
            }

            $this->startSession();
            return true;
        }
        
        return false;
    }
?>