SimplePie::get_image_url
Get the feed logo's URL
RSS 0.9.0, 2.0, Atom 1.0, and feeds with iTunes RSS tags are allowed to have a "feed logo" URL. This points directly to the image itself. Uses `<itunes:image>`, `<atom:logo>`, `<atom:icon>`, `<image><title>` or `<image><dc:title>`
Signature
public function get_image_url()
Returns
- string|null