Mysql: Delete data from a MySQL database

<?php
/* * Change the first line to whatever
* you use to connect to the database.
* * Change tablename to the name of your 
* database table.
* * This example would delete a row from
* a table based on the id of the row.
* You can change this to whatever you
* want.
*/// Your database connection code
db_connect();
$query = "DELETE FROM tablename WHERE id = ('$id')";
$result = mysql_query($query);
echo "The data has been deleted.";
?>