如何分析xdebug函数跟踪输出

I am creating function-tracing xt files with xdebug which are are created with php commands like

xdebug_start_trace('outfile')
... code ...
xdebug_stop_trace();

How can I analyze/visualize the created data?

See the documentation and the answers to this question.

You may be able to use https://github.com/corretge/xdebug-trace-gui. There are also a couple of tools available here, namely ValaXdebugTools and XDebugUtils.

And, of course, you can always roll your own solution.