note 103662 modified in reserved.variables.files by danbrown

Having url rewrite patterns in .htaccess file which modify your urls can affect $_FILES sometimes. Even though the php page loads and works fine, this variable may not work because of it. Therefore if you rewrite 'www.example.com' to 'example.com', make sure you use the latter one when sending POST to the php page. I'm still not sure why this happens, but its worth noting here so others don't spend time chasing ghosts. --was-- Having url rewrite patterns in .htaccess file which modify your urls can affect $_FILES sometimes. Even though the php page loads and works fine, this variable may not work because of it. Therefore if you rewrite 'www.something.com' to 'something.com', make sure you use the latter one when sending POST to the php page. I'm still not sure why this happens, but its worth noting here so others don't spend time chasing ghosts. http://php.net/manual/en/reserved.variables.files.php