$con = mysql_connect ("localhost","username","password");
if (!$con)
{
die ('Could not connect:' . mysql_error()0;
}
mysql_select_db("db_name", $con);
$result = mysql_query(Select column FROM table");
while($row = mysql_fetch_array($result))
{
echo $row['column'];
}

mysql_close($con);

SELECT * FROM table ORDER BY `id` DESC LIMIT 1

SELECT column FROM table ORDER BY `id` DESC LIMIT 1