How to get photo's into my iphone?

From my laptop?

From the photo folder of the Laptop, you can simply drag and drop the photos into your iPhone. This can be done in iTunes as well.

If you are talking about 'Syncing' photos from earlier iPhone to this one, then all you need to do is to connect this iPhone to iTunes and sync it.

If you don't like to use iTunes to sync photos from computer to iPhone, you can try a third-party tool to give you a hand to transfer photos from laptop to iPhone with ease. I have used AnyTrans to transfer my files from my computer to iPhone/iPad freely.