1.多個(gè)條件語(yǔ)句,網(wǎng)上很多只是一個(gè)大于或者一個(gè)小于，沒(méi)有2個(gè)合并的,如大于2并且小于4的

$where['_string'] = 'this.b > 2 & this.b<4';

2.group

mysql: $res = $model->where(['sTaskId'=>['$in'=>$task_array]])->group('a')->field('a,sum(a)')->select();  mongodb: $key = ['a'=>1]; //groupby的字段 $init = ['num'=>0];//統(tǒng)計(jì)的初始值 $option = array( 'table' => 'course’, // 表名 'condition’=>['sTaskId'=>['$in'=>$task_array]], //group中過(guò)濾條件 ); //必須要帶option $reduce = "function(obj, prev){prev.num = prev.num+obj.a}"; $model = new TestModel(); $res = $model->group($key, $init, $reduce, $option); 這里講一下tp的mongo擴(kuò)展是有問(wèn)題的，在group里調(diào)用where會(huì)無(wú)效，具體解決方案是要在mongo.class.php文件 a.把$query改為如下: $query  =  $this->parseWhere(isset($options['condition'])?$options['condition']:array()); 當(dāng)然$this->queryStr  也要改的 b.把$group改為: $group = $this->_collection->group($keys,$initial,$reduce,$query);

3.如果你要用model模型去查詢，并且你的主配置是mysql，那就需要先在配置文件配置

'mongo' => [ DB_TYPE =>  mongo             DB_HOST => localhost    DB_NAME => test DB_PORT =>  40000 DB_PREFIX =>''  DB_USER => '' DB_PWD => '' ],

然后在model文件里配置，
a.protected $trueTableName = '表名';
b.protected $connection = '驅(qū)動(dòng)名，這里是mongo';
c.該model繼承MongoModel

4.批量更新

mysql里只要$res = $model->save(['a'=>1']); mongo的話需要寫成$res = $model->where([])->save(['a'=>1]);

5.mongo注意點(diǎn)：

mongo對(duì)于數(shù)據(jù)類型的控制比較嚴(yán)格，如果你存?zhèn)€int的1，用'1'去查是查不到的!