提前三天准不准

$day = date('d',time());$t  = intval(date('t'));$_sql = 'SELECTcrd.accntnm,crd.repay_date,crd.repay_money,crd.card AS cid,crd.repay_method,cid.count,cid.loan_typeFROMcrm_repay_dk AS crdLEFT JOIN crm_intopieces_dk AS cid ON crd.card = cid.id_numWHERE1AND crd.already_num < crd.repay_numAND crd.repay_status = 0AND crd.`status` = 0';// if($day < ($t -2)){ //29// $day = $day + 3;// $_sql .= ' and repay_date = '.$day;// }else{// $s = $t -$day;// switch ($s)// {// case 0:// $_sql .= ' and repay_date = 3';// break;// case 1:// $_sql .= ' and repay_date = 2';// break;// case 2:// $_sql .= ' and repay_date = 1';// break;// }// }$dd =$day + 3 - $t; // if($dd > 0)// {// $_sql .= ' crd.repay_date = '.$dd;// }else{// $_sql .= ' crd.repay_date = '.($day + 3);// }