mantığını anladım veritabanı sorununu çözdüm ancak silme işlemini yapamıyorum sil diyince bişe olmuyo en son kodlar bu şekilde nerde hata var acaba..

<?php
include("ayar.php");
$sor=mysql_query("select*from test_mysql");
?>
<table width="400" border="0" cellspacing="1" cellpadding="0">
<tr>
<td><form name="form1" method="post" action="">
<table width="400" border="0" cellpadding="3" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<td bgcolor="#FFFFFF">&nbsp;</td>
<td colspan="4" bgcolor="#FFFFFF"><strong>Delete multiple rows in mysql</strong> </td>
</tr>
<tr>
<td align="center" bgcolor="#FFFFFF">#</td>
<td align="center" bgcolor="#FFFFFF"><strong>Id</strong></td>
<td align="center" bgcolor="#FFFFFF"><strong>Name</strong></td>
<td align="center" bgcolor="#FFFFFF"><strong>Lastname</strong></td>
<td align="center" bgcolor="#FFFFFF"><strong>Email</strong></td>
</tr>
<?php
while($yaz=mysql_fetch_array($sor)){
$id=$yaz['id'];
$name=$yaz['name'];
$lastname=$yaz['lastname'];
$email=$yaz['email'];
?>
<tr>
<td align="center" bgcolor="#FFFFFF"><input name="checkbox[]" type="checkbox" id="checkbox[]" value="<?php echo "$id"; ?>"></td>
<td bgcolor="#FFFFFF"><?php echo "$id"; ?></td>
<td bgcolor="#FFFFFF"><?php echo "$name"; ?></td>
<td bgcolor="#FFFFFF"><?php echo "$lastname"; ?></td>
<td bgcolor="#FFFFFF"><?php echo "$email"; ?></td>
</tr>
<?php
}
?>
<tr>
<td colspan="5" align="center" bgcolor="#FFFFFF"><input name="delete" type="submit" id="delete" value="Delete"></td>
</tr>
<?
// Check if delete button active, start this 
if($delete){
for($i=0;$i<$count;$i++){
$del_id = $checkbox[$i];
$sql = "DELETE FROM test_mysql WHERE id='$del_id'";
$result = mysql_query($sql);
}
// if successful redirect to delete_multiple.php 
if($result){
echo "<meta http-equiv=\"refresh\" content=\"0;URL=delete_multiple.php\">";
}
}
mysql_close();
?>
</table>
</form>
</td>
</tr>
</table>

bu kodda bi hata varmı burda sorun veriyor da

if($result){
echo "<meta http-equiv=\"refresh\" content=\"0;URL=delete_multiple.php\">";
}
}
mysql_close();
?>