Parse Error T_IF, T_FUNCTION, T_CONST

Parse errorif(isset($_SERVER['HTTP_USER_AGENT']) && $_SERVER['HTTP_USER_AGENT']=='contype')
{
	header('Content-Type: application/pdf');
	exit;
}: syntax error, unexpected 'if' (T_IF), expecting function (T_FUNCTION) or const (T_CONST) in C:\xampp\htdocs\webakuntansi\lib_pdf\fpdf.php on line 1728