As posters have already said, rindex will work, but there are also regexen. 

my $needle = '@';
my $str_index = $text =~ /.*()\Q$needle\E/ && $-[1];

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In reply to Re: Index of the last occurence of a character inside a string by ambrus
in thread Index of the last occurence of a character inside a string by Krambambuli

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