TYPO3: How to count page impressions on every page with an extension

Question

I need to count the page impressions of every page on a TYPO3 site into the db. So I think I need an extension which is called on every page impression and increase a column 'impressions' in the db of the specific page.

I'm new to typo3 and new to extension development as well. Is there a way to include an extbase-extension on every page so some php-script get called?

(Update)
I want to add more information: I don't need a counter which counts all PIs. The counter needs to be page-related. So it make sense to extend the pages-table from Typo3. Another need is that the extension should be done with extbase.

Answer 1

I'm new to typo3 and new to extension development as well. Is there a way to include an extbase-extension on every page so some php-script get called?

Once your plugin is configured you can include it with page.1234 < plugin.tx_yourextension_pi1 on any page. 1234 determines the position on your page. The script should be USER_INT, so it's not being cached (mind you, this will cost loads of performance as previously stated by @norwebian)

As you don't want to output anything, make sure the controller stays empty as well.

Answer 2

Did you do a quick search in the extension repository? Trying a search for "page counter" reveals four relevant extensions.

"Sys_stat" is the closest thing to an "official" solution, it is really just enabling a few settings already existent. It has been reported to fill up the database with too much data, though.

"Generic Visitor Counter" would be my favourite, I believe (if I was going for a page counter at all), it is recently updated and seems simple enough.

You should really consider a proper stats extension, though. Both ics_awstats and ke_stats have been in my toolset.

YMMV. Be aware that if your site is popular, stats gathering quickly gets out of hand. On the other hand, if you go for a simple counter, including uncached extensions will cost performance.