[Untonyst]

Try this

PHP код:

COMMAND:ad(playerid, params[])
{
    if (GetSVarInt(ad_true_msg) == 1)
        return SendClientMessage(playerid, -1, !"{CDCDCD}You can't send an advertising message!");    
    if (sscanf(params, "s[128]", params))
        return SendClientMessage(playerid, -1, !"{CDCDCD}Syntax: {FFFFFF}/ad [text]");    
    new name[MAX_PLAYER_NAME], ad_message[145] = "Advertisement by ";    
    GetPlayerName(playerid, name, MAX_PLAYER_NAME);    
    strcat(ad_message, name);
    strcat(ad_message, ": ");
    strcat(ad_message, params);
    SetSVarInt("ad_true_msg", 1);
    SetTimerEx("@__OnPlayerSendAdMsg", 1000*59, 0, "s", ad_message);
    
    return SendClientMessage(playerid, -1, !"Your message has been sent!");
}
@__OnPlayerSendAdMsg(message[]); 
@__OnPlayerSendAdMsg(message[])
{
    SendClientMessageToAll(0xFFFF00FF, message);
    SetSVarInt("ad_true_msg", 0);
} 


Write me if there are errors in my example. I have not tested his version