generate json response php

json_response.php

function json_response($message = null, $code = 200)
	{
		// clear the old headers
		header_remove();
		// set the actual code
		http_response_code($code);
		// set the header to make sure cache is forced
		header("Cache-Control: no-transform,public,max-age=300,s-maxage=900");
		// treat this as json
		header('Content-Type: application/json');
		$status = array(
			200 => '200 OK',
			400 => '400 Bad Request',
			404 => '404 Not Found',
			409 => 'CLIENT ERROR',
			500 => '500 Internal Server Error'
			);
		// ok, validation error, or failure
		header('Status: '.$status[$code]);
		
		// return the encoded json
		return json_encode(array(
			'status' => $code, // success or not?
			'message' => $message
		));
	}