为什么password_verify返回false？

Question

I'm using a password_verify to check my hashed password. I have PHP 5.5:

   $this->db_connection = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);


        // if no connection errors (= working database connection)
        if (!$this->db_connection->connect_errno) {

            // escape the POST stuff
            $user_name = $this->db_connection->real_escape_string($_POST['user_name']);

            // database query, getting all the info of the selected user (allows login via email address in the
            // username field)
            $sql = "SELECT user_name, user_email, user_password_hash
                    FROM users
                    WHERE user_name = '" . $user_name . "' OR user_email = '" . $user_name . "';";
            $result_of_login_check = $this->db_connection->query($sql);

            // if this user exists
            if ($result_of_login_check->num_rows == 1) {

                // get result row (as an object)
                $result_row = $result_of_login_check->fetch_object();

                // using PHP 5.5's password_verify() function to check if the provided password fits
                // the hash of that user's password


                if (password_verify($_POST['user_password'], $result_row->user_password_hash)) {

                    // write user data into PHP SESSION (a file on your server)
                    $_SESSION['user_name'] = $result_row->user_name;
                    $_SESSION['user_email'] = $result_row->user_email;
                    $_SESSION['user_login_status'] = 1;

I'm getting false on password_verify. I've already checked the posts value and mysql user_password_hash return.

I don't know why it's returning false

Any ideas?

Answer 1

Probably the problem is with your column length, from the manual: it is recommended to store the result in a database column that can expand beyond 60 characters (255 characters would be a good choice). link