Plugin Dev: Can I declare global variables in qa-plugin.php?

Question

I would like to read constant values (settings) from one place, and thought of using qa-plugin.php

Can I declare global variables in qa-plugin.php? What to be aware of?

Comments

That is a good point. I found myself repeating 'constants' across multiple files in a plugin.

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I still haven't found out how declare a global variable in a qa-plugin.php and read it e.g. from a widget module or layer...

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I used something like in my delete hidden posts plugin .. Hope it might be helpful for you .
https://github.com/amiyasahu/q2a-delete-hidden-posts/blob/master/qa-plugin.php#L23
https://github.com/amiyasahu/q2a-delete-hidden-posts/blob/master/qa-dhp-utils.php#L31

Answer 1

Yes, you can by all means - just make sure you stick to a namespace which won't clash with other things, e.g. use your plugin name as a variable prefix.

Comments

thanks for your reply :)