Recent studies at the php based xdebug problems find their phpstorm debugging php5.6 no problem at all, but after the break there will be a problem php environment into PHP7.x
The situation of the show was
Breakpoints can only continue to run the subsequent break point will not halt at the entrance off the first line of the file, the server is not responding stuck web server display 504 final timeout, after a series of research and try to find the final version is too low PHPSTORM I will PHPSTORM finer version for the latest 2019.2 like, I used to use the 10.0.2
In this detailed description of the problem - https://stackoverflow.com/questions/55153944/phpstorm-xdebug-connection-established-no-debug-window-popup-in-phpstorm