Rename an uploaded file with PHP but keep the extension

Question

I\'m using PHP to upload an image from a form to the server and want to rename the image lastname_firstname.[original extension]. I currently have:

move_upl         


        

Answer 1

move_uploaded_file($_FILES["picture"]["tmp_name"], "peopleimages/" . "$_POST[lastname]" . '_' . "$_POST[firstname]." . pathinfo($_FILES["picture"]["tmp_name"], PATHINFO_EXTENSION));