public OnPlayerDisconnect(playerid, reason)
{
    new
        szString[64],
        playerName[MAX_PLAYER_NAME];

    GetPlayerName(playerid, playerName, MAX_PLAYER_NAME);

    new szDisconnectReason[3][] =
    {
        "Timeout/Crash",
        "Quit",
        "Kick/Ban"
    };

    format(szString, sizeof szString, "%s left the server (%s).", playerName, szDisconnectReason[reason]);

    SendClientMessageToAll(0xC4C4C4FF, szString);
    return 1;
}