Download of .zip file runs a corrupted file php

Question

I\'m trying to force a download of a protected zip file (I don\'t want people to access it without logging in first.

I have the function created for the login

Answer 1

Late answer but maybe useful for users not being able to make force download work.
Add the following at the top of your php script

<?php
apache_setenv('no-gzip', 1);
ini_set('zlib.output_compression', 0);