An example of using qr might be (BTW, you don't need to escape quotes in a regex):

my %search, %found;
for (qw(pagetitle category)) {
 $search{$_} = qr/$_.*?"(.*?)"/i;
}
my ($pt, $pc);
while (<DATAFILE>){
   my $line = $_;
   for (keys %search) {
    $found{$_} = $1 if !exists $found{$_} and $line =~ $search{$_};
   }
}
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