I'm investigating usage of CPA ad types in our application and was reading about pixels for tracking conversions. It states that there are JS/HTML pixels available, but I'm wondering if there is a pixel that could be triggered on server side, (i.e. using file_open from our script). This would be a huge benefit for my app, since it would enable me to lower discrepancy and also allow more flexibility.
Does anyone have an idea?
No, there is no ability to record conversion using a server-to-server method at the moment.
Now you have options for behavior like this. Note: You cannot fire a "piexl" from the server, because pixels are specific to web pages.
Facebook created the Offline Conversions api to allow you to upload conversions that happen outside a website, like users purchasing something in a brick and mortar, or conversions that don't count until you have verified the information yourself (i.e. you must have a human review a user's sign up)
来源：https://stackoverflow.com/questions/18785141/facebook-conversion-pixel-with-server-to-server-option