src/IronMQ.php
public function getMessage($queue_name, $timeout = self::GET_MESSAGE_TIMEOUT, $wait = self::GET_MESSAGE_WAIT)
    {
        return $this->reserveMessage($queue_name, $timeout, $wait);
    }
public function getMessage($queue_name, $timeout = self::GET_MESSAGE_TIMEOUT, $wait = self::GET_MESSAGE_WAIT)
    {
        return $this->reserveMessage($queue_name, $timeout, $wait);
    }
Reserve single message from queue

@param string $queue_name Queue name
@param int $timeout
@return mixed|null single message or null
@deprecated Use reserveMessages instead