PHP笔记_PHP

PHP笔记

//统计访问量 if(!@$fp=fopen("num.txt","r")){ echo "num.txt文件创建成功！ "; } $num=@fgets($fp,12); if($num=="") $num=0; $num++; @fclose($fp); $fp=fopen("num.txt","w"); fwrite($fp,$num); echo "你是第 ".$num." 个访问者"; fclose($fp);?>

PHP全局变量

$zy = "你好";$zyy = "PHP";function lxt(){ echo $zy." ";//没有输出 global $zyy;//在函数内部定义全局变量 echo $zyy." ";//输出PHP}lxt();?>

利用反射实现对象调用方法

class Person{ function say(){ return "say"; } function run($speed, $addr){ return "我是A，我在".$addr."跑步，速度是".$speed; }}//利用反射实现对象调用方法$tom = new Person;$med = new ReflectionMethod($tom, 'say');//反射方法对象echo $med -> invoke($tom);//对象调用方法//输出：sayecho(' ');$john = new Person;$m = new ReflectionMethod($john, 'run');//反射方法对象echo $m-> invokeArgs($john, array('20', 'yichang'));//输出：我是A，我在yichang跑步，速度是20

iwebshop常用记录

//进销存，查询库存信息function inventory(){ //搜索条件 //$search = IReq::get('search');//可由前端传过来 $page = IReq::get('page') ? IFilter::act(IReq::get('page'),'int') : 1;//页码 //条件筛选处理 list($join,$where) = goods_class::getSearchCondition($search); //拼接sql $goodsHandle = new IQuery('goods as go'); $goodsHandle->order = "go.id desc"; $goodsHandle->fields = "distinct go.id,go.goods_no,go.name,go.sell_price,go.market_price,go.store_nums,go.img,go.is_del,go.seller_id,go.is_share"; $goodsHandle->page = $page; $goodsHandle->where = $where; $goodsHandle->join = $join; //$this->search = $search; $this->goodsHandle = $goodsHandle; $this->redirect("inventory");}

//出库入库public function importAndExportGoods() { $goodsId = IFilter::act(IReq::get('goods_id'),'post');//商品Id $goodsName = trim(IReq::get('goodsName', 'post'));//商品名称 $amount = trim(IReq::get('amount', 'post'));//数量 $customer = trim(IReq::get('customer', 'post'));//客户 $note = trim(IReq::get('note', 'post'));//备注 $adminName = trim(IReq::get('adminName', 'post'));//操作员姓名 $type = trim(IReq::get('type', 'post'));//类型：import export $goodsDB = new IModel("goods"); $where = "id = ".$goodsId; $goodsRow = $goodsDB->getObj($where); $store_nums = $goodsRow['store_nums'];//库存 //修改商品的库存 if($type == "import"){//入库 $store_nums = $store_nums + $amount; }else if($type == "export"){//出库 if($store_nums < $amount){//库存不够 die(JSON::encode(array('code' => 5,'info' => '库存不足，请重新输入出库数量！'))); } $store_nums = $store_nums - $amount; } $goodsRow['store_nums'] = $store_nums; $where = "id = ".$goodsId; $goodsDB->setData($goodsRow); $goodsDB->update($where);//更新库存 //将出入库记录添加到数据库 $recordDB = new IModel("in_out_record"); $record = array( 'type' => $type, 'operator' => $adminName, 'create_time' => date('y-m-d h:i:s',time()), 'goods_id' => $goodsId, 'goods_name' => $goodsName, 'amount' => $amount, 'customer' => $customer, ); $recordDB->setData($record); $record_id = $recordDB->add();//添加 die(JSON::encode(array('code' => 2,'info' => '操作成功', 'store_nums'=> $store_nums)));}

PHP笔记

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