I have two functions which I'm hooking into a plugin. Both functions are called (at different times) during a single page creation by the server.
I want to set a flag in function_a which can be read by function_b.
Question: Is there any problem with just declaring my flag in the global scope? Is there a preferred WP-style for doing this?
ps. I realize that I will need to be defensive when function_b reads the flag--by making sure that the value was explicitly set, etc.