Don't forget; you can use copy on remote files, rather than doing messy fopen stuff. e.g.
<?php
if(!@copy('http://someserver.com/somefile.zip','./somefile.zip'))
{
$errors= error_get_last();
echo "COPY ERROR: ".$errors['type'];
echo "<br />\n".$errors['message'];
} else {
echo "File copied from remote!";
}
?>