PHP create file, then force user to download it - not working

Question

So I have a form that users complete, and they are sent to a php page that sends all the variables via $_POST and then writes the output to a txt file. - that works just fine. My problem is I am trying to force the user to download it on that same page that creates the file, after the file is created and I can't seem to get it to work, nothing happens besides the file being created....

Here are the basics of what i have:

EDIT: Found the problem - I am getting a fatal error on the line with my fclose... any ideas what's wrong there?

$myfile="c-form" . date('m-d-Y_hia').'.txt';
$fileHandle = fopen($myfile, 'w');
//write stuff to file
$fclose($fileHandle);
//file is now closed
//now force user to download file that was just made
header('Content-disposition: attachment; filename=$myfile');
header('Content-type: text/plain');

Answer 1

您需要在下面的行中使用双引号：

header("Content-disposition: attachment; filename=$myfile");

Answer 2

Try something like this:

$myfilename="c-form".date('m-d-Y_hia').'.txt';
// collect the data to the be returned to the user, no need to save to disk
// unless you really want to, if so, use file_put_contents()
$dataForFile="test data to be returned to user in a file";

header('Content-type: application/x-download');
header('Content-Disposition: attachment; filename="'.$myfilename.'"');
header('Content-Transfer-Encoding: binary');
header('Content-Length: '.strlen($dataForFile));
set_time_limit(0);
echo $dataForFile;
exit;

There is no need to use fopen() and fclose() , file_get_contents() and file_put_contents() will do all that for you, and has done for years now.