[PHP] Export CSV

public function exportCSV() {
		
		$filename = 'export.csv';
		
		$sep = chr(9); // ASCII 009 (Horizontal Tab)
		$output = 'sep='.$sep."\n";
		
		$output .= 'Email'.$sep.'Firstname'."\n";
		
		$subscribers = $this->_dao->findNewsletterSubscribers(); // Query Database
			
		foreach($subscribers as $subscriber) {
			$output .= $subscriber['email'].$sep.$subscriber['firstname']."\n";
		}
		
		header('Content-type: application/csv');
		header('Content-Disposition: attachment; filename='.$filename);
		
		echo utf8_decode($output);
		exit;
	}