MongoDB数据库常用操作PHP代码详解大数据

//$conn=new Mongo(); #连接本地主机,默认端口. //$conn=new Mongo(“172.21.15.69″); #连接远程主机 //$conn=new Mongo(“xiaocai.loc:10086″); #连接指定端口远程主机 //$conn=new Mongo(“xiaocai.loc”,array(“replicaSet”= true)); #负载均衡 //$conn=new Mongo(“xiaocai.loc”,array(“persist”= ”t”)); #持久连接 //$conn=new Mongo(“mongodb://sa:[email protected]); #带用户名密码 #选择test数据库 $db=$conn- test; //$db=$conn- selectDB("test"); #第二种写法 #选择集合(选择"表") $collection=$db- user; //$collection=$db- selectCollection("user"); #第二种写法 #插入操作 $data=array("uid"= "zz123","user_name"= "张三"); $result=$collection- insert($data); #简单插入 echo "插入数据的id".$data["_id"]; exit; #插入操作 安全插入 $data=array("uid"= "zz124","user_name"= "李四"); $result=$collection- insert($data,true); #用于等待MongoDB完成操作,以便确定是否成功.(当有大量记录插入时使用该参数会比较有用) #修改操作 $where=array("uid"= "zz123"); $newdata=array("user_name"= "张三三","tel"= "123456789"); $result=$collection- update($where,array($set= $newdata)); #替换更新 $where=array("uid"= "zz124"); $newdata=array("user_age"= "22","tel"= "123456789"); $result=$collection- update($where,$newdata);
$newdata=array("user_name"= "zz","money"= 1000); $result=$collection- update($where,array($set= $newdata),array(multiple= true)); #自动累加 $where=array(money= 1000); $newdata=array(user_name= edit); $result=$collection- update($where,array($set= $newdata,$inc= array(money= -5)));
$where=array(uid= zz124); $result=$collection- update($where,array($unset= tel));//删除节点tel #删除数据 $collection- remove(array(uid= zz124)); #删除指定MongoId $id = new MongoId(4d638ea1d549a02801000011); $collection- remove(array(_id= (object)$id)); #查询数据 注:$gt为大于、$gte为大于等于、$lt为小于、$lte为小于等于、$ne为不等于、$exists不存在 echo count:.$collection- count()." br #全部 echo count:.$collection- count(array(uid= zz123))." br #可以加上条件 echo count:.$collection- count(array(age= array($gt= 10,$lte= 30)))." br #大于50小于等于74 echo count:.$collection- find()- limit(5)- skip(0)- count(true)." br #获得实际返回的结果数 #集合中所有文档 $cursor = $collection- find()- snapshot(); foreach ($cursor as $id = $value) { echo "$id: "; var_dump($value); echo " br #查询一条数据 $cursor = $collection- findOne(); #排除列 false为不显示 $cursor = $collection- find()- fields(array("age"= false,"tel"= false)); #指定列 true为显示 $cursor = $collection- find()- fields(array("user_name"= true)); #(存在tel,age节点) and age!=0 and age 50 $where=array(tel= array($exists= true),age= array($ne= 0,$lt= 50,$exists= true)); $cursor = $collection- find($where); #分页获取结果集 $cursor = $collection- find()- limit(5)- skip(0); $cursor = $collection- find()- sort(array(age= -1,type= #1表示降序 -1表示升序,参数的先后影响排序顺序 $collection- ensureIndex(array(age = 1,money= -1)); #1表示降序 -1表示升序 $collection- ensureIndex(array(age = 1,money= -1),array(background= true)); #索引的创建放在后台运行(默认是同步运行) $collection- ensureIndex(array(age = 1,money= -1),array(unique= true)); #该索引是唯一的