How to find a variable in all project files?

Question

PHP

I am writing a small project using the rather ancient PHP Designer 8 out of habit, it became necessary to find the name of one field in the database in all files, for example label_my and sometimes there is a need to look for variables. How quickly / optimally to do this if necessary?

Answer 1

Full-fledged IDEs can do this.
Or learn to work on the command line. I don't know how it is in the windows world, but in the Unix-like world there are a lot of utilities that do your job very easily: grep, ag, fzf, ask, ... lots of them. For example:
grep -r -n "label_my" ./