Ahora me sale este error.
Cambie el copy por lo que me dijiste:
move_uploaded_file
Warning: move_uploaded_file(vegito.gif): failed to open stream: Permission denied in /home/wwwchil/public_html/script.php on line 6
Warning: move_uploaded_file(): Unable to move '/tmp/phpbEjzpm' to 'vegito.gif' in /home/wwwchil/public_html/script.php on line 6