How to download a file on clicking the name of file using PHP?

Question

I Have a list of information in which there is a field where name of file is hyperlinked. I want the user to download that particular file when he clicks on it.

so,

Answer 1

     // Fetch the file info.


$filePath = $_SERVER['DOCUMENT_ROOT'] . "/dfms/images/docs/".$filename;



if(file_exists($filePath)) {
    $fileName = basename($filePath);
    $fileSize = filesize($filePath);

    // Output headers.
    header("Cache-Control: private");
    header("Content-Type: application/stream");
    header("Content-Length: ".$fileSize);
    header("Content-Disposition: attachment; filename=".$fileName);

    // Output file.
    readfile ($filePath);                   
    exit();
}
else {