[NeTuddMeg]

Код:

new pMuted[MAX_PLAYERS] = 0;

public OnPlayerRequestSpawn(playerid)
{
    pMuted[playerid] = 1;
    return true;
}

public OnPlayerSpawn(playerid)
{
    pMuted[playerid] = 0;
    return true;
}

public OnPlayerText(playerid,text[])
{
    if(pMuted[playerid] == 1) return 0;
}

It's Works..