Simple Rcon class for php.
Connection is established over TCP.
For this script to work, rcon must be enabled on the server, by setting enable-rcon=true in the server's server.properties file. A password must also be set, and provided in the script.
require_once('rcon.php');
$host = 'some.minecraftserver.com'; // Server host name or IP
$port = 25567; // Port rcon is listening on
$password = 'server-rcon-password'; // rcon.password setting set in server.properties
$timeout = 3; // How long to timeout.
$rcon = new Rcon($host, $port, $password, $timeout);
if ($rcon->connect())
{
$rcon->sendCommand("say Hello World!");
}