摘要:<?phpnamespace Util;use think\Db;use think\db\Where;class SysDb{ //指定表名 public function table($table) { $this->where
<?php
namespace Util;
use think\Db;
use think\db\Where;
class SysDb
{
//指定表名
public function table($table)
{
$this->where=[];
$this->field='*';
$this->order='';
$this->limit=0;
$this->table=$table;
return $this;
}
//指定查询字段
public function field($field='*')
{
$this->field=$field;
return $this;
}
//指定加载数量
public function limit($limit)
{
$this->limit=$limit;
return $this;
}
//排序
public function order($order)
{
$this->order= $order;
return $this;
}
//指定查询条件
public function where($where=[])
{
$this->where=$where;
return $this;
}
//返回一条记录
public function tiem()
{
return Db::name($this->table)->field($this->field)->where($this->where)->find();
}
//返回多条记录
public function lists()
{
$query= Db::name($this->table)->field($this->field)->where($this->where);
$this-> limit && $query =$query->limit($this->limit);
$this->order && $query = $query->order($this->order);
return $query->select();
}
//自定义索引
public function cates($index)
{
$query= Db::name($this->table)->field($this->field)->where($this->where);
$this -> limit && $query= $query->limit($this->limit);
$this->order && $query= $query->order($this->order);
$lists =$query-> select();
if(!$lists)
{
return $lists;
}
$result=[];
foreach ($lists as $key=>$value){
$result[$value[$index]]=$value;
}
return $result;
}
//统计数据
public function count()
{
return Db::name($this->table)->where($this->where)->count();
}
//分页
public function pages($pageSize=10){
$total= Db::name($this->table)->where($this->where)-count();
$query = Db::name($this->table)->field($this->field)->where($this->where);
$this-> $this->order && $query->order($this->order);
$data=$query->paginate($pageSize,$total);
return array('total'=>$total,'list'=>$data->items(),'pages'=>$data->render());
}
//添加
public function insert($data)
{
return Db::name($this->table)->insertGetId($data);
}
//批量添加
public function insertAll($data)
{
return Db::name($this->table)->insertAll($data);
}
//修改
public function updata($data)
{
return Db::name($this->table)->where($this->where)->update($data);
}
//删除数据
public function delete()
{
return Db::name($this->table)->where($this->where)-$this->delete();
}
}
批改老师:韦小宝批改时间:2019-02-11 10:04:27
老师总结:写的很不错 封装的数据库的操作类 基本上是可以重复使用的 在以后的其他项目中也可以直接拿过来使用哦!