[JustinAn]

Do you mean using STRCMP? OnPlayerCommandText? If yes, here ya go.

pawn Код:

public OnPlayerCommandText(playerid, cmdtext[])
{
    if(strcmp("/clearchat", cmdtext, true, 10) == 0)
    {
        if(IsPlayerAdmin(playerid))
        {
            for(new i = 0; i < MAX_PLAYERS; i++)
            {
                SendClientMessageToAll(-1, "");
            }
        }
        else SendClientMessage(playerid, -1, "You are not authorized to use this command !");
        return 1;
    }
    return 0;
}