Depending the context of parsing the log, you might find it easier to use AWK!! Woohoo!

Something like:

{ print $2"|"$3"|"$7 }
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You would run something like this

awk '{print $2"|"$3"|"$7}' web.log | perl parselog.pl
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Then your perl would be something like this

while (<>) {
 chomp;
 my ($time, $date, $expo) = split /\|/;
 print "$time, $date, $expo\n";
}
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I have recently starting using AWK to parse through delimited files. It's nice. Sorry about suggesting a non-perl solution. :-) I think it might be *NIX only too, but I am not sure.