Delete file after download

I used unlink but not working
I try use ignore_user_abort(true); but file not deleting

If file uploads, user can't really abort your PHP script executing. Once they access URL through their browser, even if they close the browser, the script will still finish what it's doing.

I'd check that you are trying to delete the right file.

Enable error messages and echo out some of your variables to check that it does actually hold data that you expect to be there.

PHP Code:

$file = 'path/to/file.txt';

// ...

error_reporting(E_ALL);
echo $file;
unlink($file); 


Can i read file content to variable and delete file and echo content?