[Dabombber]

Neither of those will work properly; the first will not work for parts of a player's name, and the second will not return true for "/spec off" (id will just be set to INVALID_PLAYER_ID).

pawn Код:

if(!isnull(params) && strcmp(params, "off", true) == 0) {
    //exit spec
    return 1;
}

new id;
if(sscanf(params, "u", id) || id == INVALID_PLAYER_ID) {
    // invalid player
    return 1;
}

// spec the player

You might want to consider just using just "/spec" to exit spectate mode, since someone might have the name "off".