The above code is wrong, is bad, works sometimes. I know this is wrong.

You didn't say in which way it should be wrong. It is not wrong, though it might do something different from your expectations. 

$sender_transaction_type !~ /3|21/

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This is true, if $sender_transaction_type does not contain the digit 3 or the digit sequence 21. For e.g. "35" or "421" it is false. Maybe you expected it to check for equal / not equal, which it doesn't. But it's not wrong.

To check if a string is not in a given set, you may use this expression: 

$sender_transaction_type !~ /^(?:3|21)$/

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But keep in mind that these are string operations where "3", "3e0" and "3." are all different, contrary to their numerical equality.

Greetings,
-jo

$gryYup$d0ylprbpriprrYpkJl2xyl~rzg??P~5lp2hyl0p$

In reply to Re: Multiple numeric not or compare in if statement by jo37
in thread Multiple numeric not or compare in if statement by RedJeep

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