Petit prob de fonction !

<?php
//fonction d'incrémentation du nombre de news du posteur !
function incre_hit($rub,$pseudo,$do)
 {
  connect($t2);
        $sql= 'SELECT '.$rub.' FROM site_membres WHERE pseudo="'.$pseudo.'"';
	$req= mysql_query($sql) or die ('Erreur SQL !<br>'.$sql.'<br>'.mysql_error());
	$data= mysql_fetch_array($req);
	if($do==plus){$nb=$data[''.$rub.'']+1;}
	if($do==moins){$nb=$data[''.$rub.'']-1;}   
	disconnect($req);
   
  connect($t2);
        $sql = 'UPDATE site_membres SET 
		'.$rub.'="'.$nb.'" 
		WHERE pseudo="'.$pseudo.'"';

		mysql_query($sql) or die('Erreur SQL !'.$sql.'<br>'.mysql_error());    
		mysql_close ();
 } 
?>

<?php
elseif($_GET['do']==dl)
		{    
		if($_SESSION['statut']==1 || $_SESSION['statut']==2)
			{
			supp($nw,$_GET['id']);
	
			connect($nwc);
			$sql ='DELETE from site_news_comentr WHERE Id_news="'.$_GET['id'].'"';
                	mysql_query($sql) or die('Erreur SQL !'.$sql.'<br>'.mysql_error());
                	mysql_close();
			
			
			connect($nw);
			$sql2 = "SELECT * FROM site_news WHERE id='".$_GET['id']."'";
			$req2 = mysql_query($sql2) or die('Erreur SQL !<br>'.$sql2.'<br>'.mysql_error());
			$data = mysql_fetch_array($req2);
			$pseudo=$data['auteur'];
			mysql_close();
			incre_hit("nb_news",$pseudo,"moins");
			
		
			echo "<meta http-equiv='refresh' content='0; url=admin_news.php?debut=yes'>";
			}
		else
			{
			echo "Vous n'avez pas les droits de suppression de cet new !";
			}
		}

?>

<?php

@mysql_query("UPDATE `table_news` SET `nb_news` = (nb_news - 1) WHERE pseudo = "$pseudo" LIMIT 1");

?>

<?php     
   if($do==plus){$nb=$data[''.$rub.'']+1;}
    elseif($do==moins){$nb=$data[''.$rub.'']-1;}   
    disconnect($req);
?>