$posted  = $_POST["resim"];
        if ($_FILES["resim"]['name']){
        $filename=$_FILES["$posted"]['name'];
        $efilename = explode('.', $filename);
        $uzanti = $efilename[count($efilename) - 1];
        $uzantilar=array('jpg','png','gif');       
        $isim=rand(0,99999999);
        $yeniad = "".$isim.".".$uzanti."";
        $hedef1  = "resimler/".$yeniad;
        if(is_uploaded_file($_FILES["$posted"]['tmp_name']){
        move_uploaded_file($_FILES["$posted"]['tmp_name'],"resimler/".$yeniad);
        }
}

enctype="multipart/form-data"