What is a good wide view webcam?

Question

CCTV

Good afternoon. Suggest a cheap webcam.
Purpose - installation at a construction site to monitor the construction process. Therefore, the main parameter is a wide viewing angle. Well, the price))

Answer 1

A good wide view surveillance camera is already 90 degrees. As you wrote, you need value for money, I can advise Zenith G9 yourcamera.ru/ip-kamery/zenith-g9-detail , an excellent camera. Ease and simplicity of installation, settings, picture quality at altitude. I think the angle is no longer needed, because construction is not only going on from one point, something can happen on the other side of the object, so a couple of such cameras and everything will be ok.

Answer 2

Subtract timestamp from current time()

Answer 3

if(time() + (3600*3) >= $altt['time']){
  // passed 3 and more hours
}

Answer 4

Should your condition itself be called after 3 hours or when the page is opened to check the difference?