How to know if my page is running in a facebook iframe or not

Question

I\'m currently developing a site which runs standalone and as a facebook app on an iframe I was wondering what whold be \"best practice\" for checking if my page is ran in a

Answer 1

Here is some php code to test if the current page is running inside a facebook iframe :

if( strpos( $_SERVER[ 'HTTP_REFERER' ], "apps.facebook.com" ) !== false ){
    // Page is running in Facebook iframe
}