This is a frequently asked question as a Super Search on titles containing "variable names" in SoPW will quickly show you. The answer is invariably "Don't do that", and very often goes on to ask "What is it you really want to achieve".

Replies to the following may provide further enlightenment:

DWIM is Perl's answer to Gödel

In reply to Re: Using variable contents in new variable name by GrandFather
in thread Using variable contents in new variable name by antioch

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