Prom.php
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<?php
//促销处理类
class Prom{
private $total_amount = 0.0;
//活动类型: 0满额打折 1满额优惠金额 2满额送倍数积分 3满额送优惠券 4满额免运费
private $prom_order = array(0,1,2,3,4);
//活动类型: 0直接打折 1减价优惠 2固定金额 3买就赠优惠券 4买M件送N件
private $prom_goods = array(0,1,2,3,4);
public function __construct($amount=0){
if(is_numeric($amount)){
$this->total_amount = $amount;
}else{
//显示错误
}
}
public function setAmount($amount=0){
if(is_numeric($amount)){
$this->total_amount = $amount;
}else{
$this->total_amount = 0;
}
}
//取得满足条件的规则
public function meetProms($group_id=0){
$model = new Model("prom_order");
$time = date('Y-m-d H:i:s');
$where = " `money` <= ".$this->total_amount." and is_close=0 and start_time < '".$time."' and end_time > '".$time."'";
$safebox = Safebox::getInstance();
$user = $safebox->get('user');
$group_id = ',0,';
if(isset($user['group_id'])) $group_id = ','.$user['group_id'].',';
if($group_id){
$where.=" and CONCAT(',',`group`,',') like '%".$group_id."%'";
}
$proms = $model->where($where)->order("type,cast(expression as decimal) desc")->findAll();
return $proms;
}
public function parsePorm($prom){
$type = $prom['type'];
$expr = $prom['expression'];
$result = array('total_amount'=>$this->total_amount,'value'=>0.00);
switch ($type) {
case '0':
$result['total_amount'] = $this->total_amount*($expr)/100;
$result['note'] = "省".($this->total_amount*(100-$expr)/100)."（".($expr/10)."折）";
$result['value'] = floatval($this->total_amount*(100-$expr)/100);
break;
case '1':
$result['total_amount'] = $this->total_amount-$expr;
$result['note'] = "省".$expr."（立减".$expr."）";
$result['value'] = floatval($expr);
break;
case '2':
$result['value'] = intval($expr);
$result['note'] = "送".$expr."倍积分";
break;
case '3':
$model = new Model("voucher_template");
$voucher = $model->where("id=".Filter::int($expr))->find();
if($voucher){
$result['note'] = "面值".$voucher['value']."优惠券";
}else{
$result['note'] = "所送的优惠券已不存在";
}
break;
case '4':
$result['note'] = "免运费";
break;
}
return $result;
}
public function prom_goods($goods){
$price = $goods['sell_price'];
$nums = $goods['goods_nums'];
$result = array('real_price'=>$price,'note'=>'','minus'=>"-0");
$prom_id = $goods['prom_id'];
if($prom_id>0){
$model = new Model('prom_goods');
$time = date('Y-m-d H:i:s');
$prom = $model->where("id=$prom_id and is_close=0 and start_time < '".$time."' and end_time > '".$time."'")->find();
$safebox = Safebox::getInstance();
$user = $safebox->get('user');
$group_id = ',0,';
if(isset($user['group_id'])) $group_id = ','.$user['group_id'].',';
if($prom && stripos(','.$prom['group'].',',$group_id)!==false){
$type = $prom['type'];
$expr = $prom['expression'];
$result['prom'] = $prom;
//0直接打折 1减价优惠 2固定金额 3买就赠优惠券 4买M件送N件
switch ($type) {
case '0':
$result['real_price'] = $price*$expr/100;
$result['minus'] = "*".($expr/100);
$result['note'] = '直接'.($expr/10)."折";
break;
case '1':
$result['real_price'] = ($price-$expr)>0?($price-$expr):0;
$result['real_price'] = sprintf("%01.2f",$result['real_price']);
$result['minus'] = "-".$expr;
$result['note'] = "立减".$expr;
break;
case '2':
$result['real_price'] = sprintf("%01.2f",$expr);
$result['minus'] = "*0+".$expr;
$result['note'] = "促销价".$expr;
break;
case '3':
$model = new Model("voucher_template");
$voucher = $model->where("id=".$expr)->find();
if($voucher){
$result['note'] = "送".$voucher['name']."优惠券,面值".$voucher['value'];
}else{
$result['note'] = "所送的优惠券已不存在";
}
break;
case '4':
$expr = explode('/', $expr);
if($nums>=$expr[0]) $result['note'] = "满".$expr[0]."件送".$expr[1];
break;
}
}
}
return $result;
}
}