new gMuted[MAX_PLAYERS];

public OnPlayerCommandText(playerid, const cmdtext[])
{
	// stuff
	if (IsPlayerAdmin(playerid))
	{
		if(strcmp(cmdtext, "/mute", true, 5) == 0)
		{
			if (cmdtext[5])
			{
				gMuted[strval(cmdtext[5])] ^= 1; // Toggle
				SendClientMessage(playerid, 0x00FFFFAA, "Muted");
			}
			else
			{
				SendClientMessage(playerid, 0x00FFFFAA, "Useage: /mute <playerid>");
			}
			return 1;
		}
	}
	return 0;
}

public OnPlayerText(playerid, const text[])
{
	if (gMuted[playerid]) return 0;
}