PHP PDO MySQL INSERT

Hi PHP Gurus, being a newbie I have a simple and mundane question for you, but the answer evades me. I thought that my query was good but it doesnt work.

$quer2 = $dbo -> prepare("INSERT into faq_headers(faq_id,faq_class,faq_catid,faq_subcatid,faq_subcat2,faq_heading,faq_question,faq_answer,faq_poster,faq_date) VALUES(NULL,:faq_class,:faq_catid,:faq_subcatid,:faq_subcat2,:faq_heading,:faq_question,:faq_answer,:faq_poster,CURRENT_TIMESTAMP)");
$quer2 ->bindParam(':faq_class', $fileclass);
$quer2 ->bindParam(':faq_catid', $catid);
$quer2 ->bindParam(':faq_subcatid', $subcatid);
$quer2 ->bindParam(':faq_subcat2', $subcat2);
$quer2 ->bindParam(':faq_heading', $faq_heading);
$quer2 ->bindParam(':faq_question', $faq_question);
$quer2 ->bindParam(':faq_answer', $faq_answer);
$quer2 ->bindParam(':faq_poster', $faq_poster);
$quer2->execute();

for info my DB details are:

faq_id int(5) AUTO_INCREMENT
faq_class varchar(15)
faq_catid int(5)
faq_subcatid int(5)
faq_subcat2 varchar(25)
faq_heading varchar(50)
faq_question varchar(100)
faq_answer varchar(255)
faq_poster varchar(25)
faq_date timestamp CURRENT_TIMESTAMP