How can I get parts of these strings?

How can I get parts of these strings?

Hi

How can I get the playlist id:
  1. <iframe src="https://embed.spotify.com/?uri=spotify%3Auser%3A1232159430%3Aplaylist%3A5MmcyYIFKUtPdBleY3WRF5" width="300" height="380" frameborder="0" allowtransparency="true"></iframe>

How can I get the track id:

  1. <iframe src="https://embed.spotify.com/?uri=spotify%3Atrack%3A1GRU2S5QP5IlK5EyXAkJCB" width="300" height="380" frameborder="0" allowtransparency="true"></iframe>

How can I get the Playlist id:

  1. <iframe src="//playlists.applemusic.com/embed/pl.4705ab1ed97c4f4bb54f48940faf5623?country=us&app=music" height="500px" width="100%" frameborder="0"></iframe>

Thank you