Picking up an external website image and putting it in a div

Good afternoon, I'm still new to this business, but can you get an image of an external site and put it on my page? I have searched some functions like .load () ajax or in php with file_get_contents () I could get the image by direct link only as the image is changing it would not work. This image belongs to a div maybe if I can bring this div to my html, I could just put the url: link and in that site I get only that one img with a specific id?