feed-reader-central/src/lib/Key.php

<?php

class Key {

    /** @var string The $_SESSION key for the current user's e-mail address */
    public const string USER_EMAIL = 'FRC_USER_EMAIL';

    /** @var string The $_SESSION key for the current user's ID */
    public const string USER_ID = 'FRC_USER_ID';

    /** @var string The $_REQUEST key for the array of user messages to display */
    public const string USER_MSG = 'FRC_USER_MSG';
}