What do you actually have in $sentence? I note that you're using /g on both matches, so the 2nd will start searching where the first left off, rather than at the beginning. Your "fixed" version circumvents that behavior (and makes me wonder what you hope to accomplish with the /g modifier). This works as anyone would expect it to: 
my $sentence = 'I got a foo and a bar in me';
if ($sentence =~ /foo/gis && $sentence =~ /bar/gis)
{
   print "I'm doing something with $sentence\n";
}

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whereas reversing bar and foo in the sentence cause the test to fail.
Caution: Contents may have been coded under pressure.

In reply to Re: using && with regex in an if() statement by Roy Johnson
in thread using && with regex in an if() statement by Tachoknight

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