X-Debug cheat sheet.

It's just cheat sheet, for X-debug to anyone wants to start to use this amazing tool.

In order to use the debugger you need to know about the following concepts:

Breakpoints

Please BREAK at this point and tell the server what's going on

Call stack

A list of functions in the debugger that explains how the program got to where it currently is.

Think of this as a live stack trace, without the exception.

Stepping

Stepping is the action of "telling the debugger" to advance through your program one line at a time. Remember, a computer program is many small steps combined to form a large goal. It is often the case that one of these small steps is "incorrect". To identify which step is incorrect, we "step" through the program, looking at each line of code as we come to it, and seeing what effect this has on the VARIABLES (really the data in the variables)

There are several ways to tell the debugger to move through the code:

Step over

Step Over the current function/method.

Runs the function/method, but doesn't debug into it.

Step into

Step Into the current function/method.

Move to the file the function was declared and steps over that function.

Step Out

Step Out of the current function/method.

Move to the place that the return value is used.

Sources:

Step Into Step-through Debugging.

https://www.fourkitchens.com/blog/article/step-step-through-debugging/

Step Into Debugging with PhpStorm

https://www.youtube.com/watch?v=GokeXqI93x8

Learn How to Debug PHP with Xdebug and VsCode

https://www.cloudways.com/blog/php-debug/

https://docs.microsoft.com/en-us/visualstudio/debugger/debugger-feature-tour?view=vs-2019