PHP delete script

ok well ive basically takes takes the table name and id from the user and then delets it from the database here is my part of the script.

<?php
$delete_item_code = mysql_escape_string($_POST['delete_item_code']);
if(isset($_POST['Delete'])) {
if (!isset($_POST['delete_item_code']) || trim($_POST['delete_item_code']) == "" ) {
    echo "<span class=\"red\">Please enter a stock code</span>";
}
else if(empty($deletetable))
{
echo "<span class=\"red\">Please Select a Table</span>";
}
else {
		 $sqlquery="DELETE FROM `$deletetable` WHERE item_code = $delete_item_code ";
		 $resultdelete=mysql_query($sqlquery);
echo mysql_error();
echo "<div id=\"added\"><span class=\"font\">Your stock item $item_code has been Deleted</span></div>"; 

}
}
?>

Code (markup):

However if it doesn't delete a item for example the item number doesn't exist it doesnt give me a warning does anyone know any ways i can give the usr a warning if the id doesn't exit within the table.

 

if (!mysql_affected_rows())
{
    echo 'No item was deleted.';
}
else
{
    echo 'Item successfully deleted.';
}

PHP:

www.php.net/mysql_affected_rows