Let Perl generate the regular expression from a hash containing the list of words and their replacements:
my %trans = (zero => 0,
one => 1,
two => 2,
three => 3);
my $words_re = join "|", map quotemeta, keys %trans;
$string =~ s/($words_re)/$trans{lc $1}/ig;
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
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<u> <ul>
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
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Want more info? How to link
or How to display code and escape characters
are good places to start.
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