To put a visitor counter like this on your web page, put an image tag in your HTML document like:

where "unique_id" is a unique identifier for your counter.

When creating a new counter you can set the starting value by adding a count parameter to the URL. So if the counter "qwerty" didn't exist, accessing the URL
will create a new counter called "qwerty" with its counter set to 1234.
The counter can only be set when creating a new counter.