[Shinja]

I Made a silly mistake up
Try this

PHP код:

CMD:check(playerid, params[])
{
    new giveplayerid;
    if(sscanf(params,"d",giveplayerid)) return SendClientMessage(pid, COLOR_RED, "* {ff9900}/check ID" );
        if(giveplayerid == INVALID_PLAYER_ID) return SendClientMessage(pid, COLOR_RED, "* Invalid ID!" );
    if(GetPlayerVehicleID(giveplayerid) == 415) return SendClientMessage(pid, COLOR_RED, "* Text!" );
    SendClientMessage(playerid, COLOR_RED, "* Player is clear!" );
    return 1;
}