How to request permission for a canvas application using Facebook PHP SDK v4

Question

我想知道如何使用使用Facebook PHP SDK v4的画布应用程序正确请求权限（publish_actions）。

Answer 1

Asking for permission is the same as other apps:

// set redirect_uri
$helper = new FacebookRedirectLoginHelper( 'http://apps.facebook.com/yourapp' );

// login link
echo '<a href="' . $helper->getLoginUrl( [ 'publish_actions' ] ) . '" target="_top">Login</a>';