$post = $CI->post->read(array(
	'id' => $pid_dec
))->row();

exists($post);

$new_post = $CI->post->create(array(
	'parent_id' => $post->parent_id,
	'in_reply_to_id' => $pid_dec,
	'content' => $reply_text,
	'content_syntax' => "markdown",
	'user_id' => $uid_dec
));

$CI->thread->update(
	$new_post['id'],
	$new_post['parent_id'],
	$new_post['in_reply_to_id'],
	$uid_dec
);