Finding null character using Regex in Perl

perl, regex

Solution

You can use `\x` followed by the hex code of an ASCII character to match that ASCII character.

E.g. `/\x3F/` will match a "?", `/\x46\x4F\x4F/` to match "FOO".

See it here on Regexr

So `/\x00/` would match the NULL character.

Problem

I want to find the null characters in an array, which I have. I tried displaying the ASCII value and it printed 0 (So I am confirmed it is a null value). How do I write a regex to filter out those values. I wrote : ``` m/^$/ig ``` which really didn't help me. Does anybody know how to match a null character ?

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