php跨域

header("Access-Control-Allow-Origin: " . $_SERVER['HTTP_ORIGIN']);
header('Access-Control-Allow-Credentials: true');
header('Access-Control-Max-Age: 86400');
if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
	if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD'])) {
		header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS");
	}
	if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS'])) {
		header("Access-Control-Allow-Headers: {$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']}");
	}
	exit;
}