$query = "SELECT distinct * FROM dateuser_liste"; 
$resulta = mysql_query($query) or die("Anfrage fehlgeschlagen: " . mysql_error()); 
          
 while($row = mysql_fetch_array($resultb)){ 
   
              if ($user == $row->user) { 
     
$queryb = "UPDATE dateuser_liste SET user = '$o_user',  user_freund = '$user_freund', 
 status_freund = '$status_freund', user_favor = '$user_favor', user_profil =  '$user_profil' where user = '$o_user' "; 
        $eintragen1 = mysql_query($queryb); 
    
             } 
              
        } 
              
             if(!isset($queryb)){ 
             
$queryb="INSERT INTO dateuser_liste (user, user_freund, status_freund, user_favor, user_profil)  
values  
('$o_user','$user_freund','$status_freund','$user_favor','$user_profil')"; 
              } 
 mysql_query($queryb) or die("Anfrage fehlgeschlagen2:  " . mysql_error());                              
             
            
        
}