Unexpected T-VARIABLE

[Maximus]

<?
session_start() ;
require_once('d b.inc.php');
$id=$_GET['id'];
if(!$id) {
header('Locatio n: main.php');
} else {

mysql_select_db ("tbl_posts" )
$sql="SELECT * FROM tbl_posts WHERE post_id ='" .$id. "'";
$r=mysql_fetch_ array($query);
}
?>

can anyone tell me what's wrong with this code?
it keeps giving me:

Parse error: syntax error, unexpected T_VARIABLE in C:\Program
Files\Apache Group\Apache2\h tdocs\secretBox \viewtopic.php on line 10