PHP curl to login and download a page from Piwik? (no replies)

Hello,

I would like to use curl to login and then download the Visits Overview/Summary page from Piwik:

piwik/index.php?module=CoreHome&action=index&idSite=1&period=day&date=today#module=VisitsSummary&action=index&idSite=1&period=day&date=today

But each time the cookie file contains this:

#HttpOnly_domain.com FALSE / FALSE 0 PIWIK_SESSID XXXXXXXXXXXXXXXXX

So I suppose the login is unsuccessful?