Simple Active Users Counter
is a service to record and show number of recent active/online users. The
procedure used by this service is different to other services used for the same
Get code for Simple Active Users Counter.
User Counters in PHP are often associated to a database where user’s information is saved. The database
allows to save a lot of information related to each visitor to our
website, and retrieval of all this data from the database allows to
show not only the number of visitors in the last minutes (the
active/online visitors), but also the number of visitors during the day
and the day before, or number of visitors during the week, month or
year. Of course, saving data to large databases and searching them
requires quite a lot computing and read/write activity (the more
visitors to the website, the more "expensive" is to retrieve the data).
- More modest Active Users Counters do not use databases. The data is stored in a text file. Often, only
the IP address and the last date of activity of each user is stored in
the file. Consequently, the structure of the files is simple, and the
amount of data available is limited. Unfortunately, in most cases, the
files must be completely read each time a new data is added to the
file, and the complete information must be re-saved. So computing and
read/write activity may be important.