Post count for category and tag

I have this code that counts the result found when a search is made. Here goes the code.

<?php /* Search Count */ 
    $allsearch = &new WP_Query("s=$s&showposts=-1"); 
    $key = wp_specialchars($s, 1); 
    $count = $allsearch->post_count; 
    $text  = '<span class="resultsFound">';
if ( $allsearch->found_posts <= 0 ) {
    $text .= sprintf(__( '( Nothing Found )' ), $count );
}

elseif ( $allsearch->found_posts <= 1 ) {
    $text .= sprintf(__( '( We found %d company )' ), $count );
} 

else {
    $text .= sprintf(__( '( We found %d companies )' ), $count );
}       
$text .= '</span>'; 
echo $text;
?>

The code above is the code for counting all the post found in search page. I want to apply this function to my category as well as tag page. Any solution?