$return = array(
		'status' => '0',
		'error' => $error
	);
	echo json_encode($return);

##</code><code>##

print qq|{
   "status": '0',
   "error": 'foo'
}|;

##</code><code>##

print qq|<response>
  <status>0</status>
  <error>foo</error>
</response>|;