title: PHP: measure TTFB (Time To First Byte)
body: <p>Since the TTFB can vary by every request, I want to make a statistic and get an average value for it. Does anyone know how I can measure this via PHP?
  The website bytecheck.com is able to analyze these data:
  Here is an example with example.com: <a href="http://www.bytecheck.com/results?resource=example.com" rel="nofollow noreferrer">http://www.bytecheck.com/results?resource=example.com</a></p>
  
  <p>Does anyone a suggestions how I could achieve something like this? </p>
  
  <p>Thanks in advance.</p>