"Incomplete file" error downloading file with header in php

Question

I am using header in PHP in order to force downloading a text file. This is the code:

$file = fopen("download/file.txt",'w');
fwrite($file,"some text" . PHP_EOL);
fclose($file);
header("Content-Disposition: attachment; filename=\"" . basename($file) . "\"");
header("Content-Type: text/plain");
header("Content-Length: " . filesize($file));
header("Connection: close");

When I click the button, file is generated correctly, and I can open it in a text editor, but doesn't download because this: "Error: incomplete file". Where am I wrong?

Answer 1

Thanks for the comments. You are right, I had to add readfile() to my code. With this line at the end of the code it works good:

readfile($file);