while ($dsatz = mysql_fetch_assoc($res))
{
    //Erstelle Timestamp für letzten Zugriff 
    $expl_time = explode(':',$dsatz['time']); 
    $expl_date = explode('-',$dsatz['date']); 
    $expl_time_size = count($expl_time); 
    $expl_date_size = count($expl_ddate); 
    
    $time_stunden = $expl_time['0'] ; 
    $time_minuten = $expl_time['1'] ; 
    $time_sekunden = $expl_time['2']; 

    $last_time = mktime($time_stunden,$time_minuten,$time_sekunden);   
     
    $last_time = $lasttime + 60; 
     
    if($last_time < $server_time) 
    { 
        //werte in Datenbank schreiben 
        $user_update = "insert zugriffszaehler (ip,host,time,date,browser ) values ('".$_SERVER['REMOTE_ADDR']."','".$host."','".$time."','".$date."','".$_SERVER["HTTP_USER_AGENT"]."')";

        mysql_query($user_update); 
         
    } 
     
     
}