como aplico lo sgte en la version 4.2.2 de php???
Código PHP:
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // Date in the past
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
header("Cache-Control: no-store, no-cache, must-revalidate"); // HTTP/1.1
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache"); // HTTP/1.0
ya que me da el sgte error....
Warning: Cannot add header information - headers already sent by (output started at /home/www/.../admin/articulo.php:7) in /home/www/.../admin/articulo.php on line 8
Warning: Cannot add header information - headers already sent by (output started at /home/www/html/.../admin/articulo.php:7) in /home/www/html/.../admin/articulo.php on line 9
etc etc etc
en la 4.3.0 funka ok...
gracias