Useless use of addition (+) in void context at test.pl line 1123.

##</code><code>##

$html = $html . qq(  &nbsp;|&nbsp; <font color="#ff0000">$t2</font> ), $i + 1;

##</code><code>##

...

for (my $i = 0; $i <= $pages -1; $i++) {

     if ($i == 0) {
         if ($limit != 0) {
             $html = $html . qq(   <a href="test.pl">);
             my $r1 = $i + 1;
             $html = $html . $r1 . qq(</a>);
         }else {
            my $r2 =  $i + 1;
            $html = $html . qq($r2);
          }
      }

     if ($i > 0) {
         if ($limit != ($i * $results_per_page)) {
             $html = $html . qq( &nbsp;|&nbsp; <a href="test.pl);
             my $r3 = $i * $results_per_page;
             $html = $html . $r3 . qq(">);
             my $t = $i + 1;
             $html = $html . $t . qq(</a>);
         }else {
             my $t2 = $i + 1;
             $html = $html . qq(  &nbsp;|&nbsp; <font color="#ff0000">$t2</font> ), $i + 1;
          }
     }
 }

...