Using PHP and possibly a regular expression I need to switch around the second sentence in a paragraph with the first. Been trying to work something out for hours, but the code becomes very verbose…all suggestions appreciated.

I want to in HTML make a few images switch but not on my click or hover. I want them to automatically switch. Does anyone know the codes?

how can i get 2 images to swap positions with either other one of the left, the other to the right using html?