Strange logging error

I am trying to write a simple logging script to record when users log in / log out / failed logins etc I am using this code $l = new Log_file('logs/user_login.log', 'user_login'); $l->log("LOGIN : $user_name", LOG_INFO); $l->close(); but the log file always records debug not info I added a print_r to the priorityToString() function (just before return statement), which outputs the following Array ( [1] => critical [4] => error [5] => warning [6] => debug ) what has happened to the others?? function priorityToString($priority)

    {
        $priorities = array(
            LOG_EMERG   => 'emergency',
            LOG_ALERT   => 'alert',
            LOG_CRIT    => 'critical',
            LOG_ERR     => 'error',
            LOG_WARNING => 'warning',
            LOG_NOTICE  => 'notice',
            LOG_INFO    => 'info',
            LOG_DEBUG   => 'debug'
        );
        print_r($priorities);
        return $priorities[$priority];   // returns debug even if i pass LOG_INFO
    }