code edit sql

<?php
$id=$_GET['id'];
$rs=mysql_query("select * from action where id='$id'");
$data=mysql_fetch_array($rs);
?>





<?php
   if($_POST['edit']){
$variabel=$_POST['variabel'];
$variabel=$_POST['variabell'];
$gambar=$_FILES["gambar"]["name"];
$tmp=$_FILES["gambar"]["tmp_name"];
$variabel=$_POST['variabel'];
$variabel=$_POST['variabel'];
mysql_query("update nama tabel set variabel='$variabel', gambar='$gambar',variabel='$variabel',variabel='$variabel' where primary key='$primary key'") or die(mysql_error());
copy($tmp,"../images/$gambar");
echo "<script>alert('Data berhasil diubah');location='.?page=nama halaman yang akkan di tampilkan setelah editing tanpa disertai(.php)';</script>";
}
?>
    <?php
if($_POST['cancel']){
echo"<script>location='.?page=nama halaman yang akkan di tampilkan setelah di cancel tanpa disertai(.php';</script>";
}
?>