title: PHP Xdebug profiler not tracing relevant functions
body: <p>I have a PHP 7.1/Zend Framework 1 project running in a docker container with Xdebug 2.7 and I'm trying to figure out, why my PHP functions take up to 30 seconds. However the Xdebug profiler is only tracing framework/library internal functions. None of my own functions are visible in the call stack.</p>
  <p><a href="https://i.stack.imgur.com/vQ2mA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vQ2mA.png" alt="Screenshot of the Xdebug cachegrind file in KCachegrind" /></a></p>
  <p>I would appreciate any suggestion that could help me solve my problem.</p>