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How to show text in the front end via hook?

Question asked by cfton cfton on Nov 19, 2014
Latest reply on Nov 20, 2014 by cfton cfton
I want to know some variable values while a hook is called.
How may I show this variables while those hook is called?
Hook is after save.
I need to know its values either by echo "", var_dump or even showing in log file
is there anyway??
Please help meeeee