[PHP] Force the download of .pdf or image files

How can I force the download of .pdf, .doc and image files? I have some links to downloadable docs in my website, but when we click the links, IE opens the file directly in the window. I wish when the user click a download start, even if it is a .jpg, .gif, .pdf or .doc file. There is a way to

Re: [PHP] Force the download of .pdf or image files

How can I force the download of .pdf, .doc and image files? I have some links to downloadable docs in my website, but when we click the links, IE opens the file directly in the window. I wish when the user click a download start, even if it is a .jpg, .gif, .pdf or .doc file. There is a way