Insert dynamic table name

Hi, im trying to insert into a db table 'blog_it ’

Ive declared values using:

$lang = $_GET['lang'];
$mdb = "blog_";
$mdbf = $mdb . $lang;

…and insert using:

	$query = "
INSERT INTO ".$mdbf." (.....  

…however i get an error that ‘blog_’ can’t be found (without the ‘it’)…ive echo $mdbf on the page and the full value is shown

…what i doing obviously wrong?..thanks in advance

Are you calling your URL like this: