public fw_PlayerPreThink(id)
{
    if (!is_user_alive(id))
        return FMRES_IGNORED;
    if (fm_cs_get_user_team(id) != 1)
        return FMRES_IGNORED;
    if (has_custom_weapons(id, PRIMARY_WEAPONS_BIT_SUM) || has_custom_weapons(id, SECONDARY_WEAPONS_BIT_SUM))
    {
        fm_strip_user_weapons(id)
        fm_give_item(id, "weapon_knife")
    }
    return FMRES_IGNORED;
}

new test[33]


...


if(get_gametime() - test[id] >= 某时间)
{
     //something
}


test[id] = get_gametime()