Código PHP:
$value = 'dato';
setcookie("TestCookie", $value, time()+3600);
Warning: Cannot modify header information - headers already sent by (output started at /home/virtual/site265/fst/var/www/html/admin.ayalavilla.com/login/checklogin.php:5) in /home/virtual/site265/fst/var/www/html/admin.ayalavilla.com/login/checklogin.php on line 36
a que se debe este error
saludos