Cookie generated by applications based on the PHP language. This is a general purpose identifier used to maintain user session variables. It is normally a random generated number, how it is used can be specific to the site, but a good example is maintaining a logged-in status for a user between pages.
Used by Google AdSense for experimenting with advertisement efficiency across websites using their services.
ID used to identify users
ID used to identify users for 24 hours after last activity
Used to monitor number of Google Analytics server requests when using Google Tag Manager
This cookie is set by DoubleClick (which is owned by Google) to determine if the website visitor's browser supports cookies.