php mongodb操作类 带几个简单的例子
之前毛票票已经发过几篇类似的文章,大家可以参考一下。
核心代码:
classNewMongodb{ private$mongo;//NewMongodb连接 private$curr_db_name; private$curr_table_name; private$error; public$config; publicfunctiongetInstance($mongo_server,$flag=array()) { static$NewMongodb_arr; if(empty($flag['tag'])) { $flag['tag']='default';} if(isset($flag['force'])&&$flag['force']==true) { $mongo=newNewMongodb($mongo_server); if(empty($NewMongodb_arr[$flag['tag']])) { $NewMongodb_arr[$flag['tag']]=$mongo; } return$mongo; } elseif(isset($NewMongodb_arr[$flag['tag']])&&is_resource($NewMongodb_arr[$flag['tag']])) { return$NewMongodb_arr[$flag['tag']]; } else { $mongo=newNewMongodb($mongo_server); $NewMongodb_arr[$flag['tag']]=$mongo; return$mongo; } } /** *构造函数 *支持传入多个mongo_server(1.一个出问题时连接其它的server2.自动将查询均匀分发到不同server) * *参数: *$mongo_server:数组或字符串-array("127.0.0.1:1111","127.0.0.1:2222")-"127.0.0.1:1111" *$connect:初始化mongo对象时是否连接,默认连接 *$auto_balance:是否自动做负载均衡,默认是 * *返回值: *成功:mongoobject *失败:false */ publicfunction__construct($mongo_server,$connect=true,$auto_balance=true) { if(is_array($mongo_server)) { $mongo_server_num=count($mongo_server); if($mongo_server_num>1&&$auto_balance) { $prior_server_num=rand(1,$mongo_server_num); $rand_keys=array_rand($mongo_server,$mongo_server_num); $mongo_server_str=$mongo_server[$prior_server_num-1]; foreach($rand_keysas$key) { if($key!=$prior_server_num-1) { $mongo_server_str.=','.$mongo_server[$key]; } } } else { $mongo_server_str=implode(',',$mongo_server); }} else { $mongo_server_str=$mongo_server; } try{ $this->mongo=newMongoClient($mongo_server,array('connect'=>$connect)); } catch(MongoConnectionException$e) { $this->error=$e->getMessage(); returnfalse; } } /** *连接NewMongodbserver * *参数:无 * *返回值: *成功:true *失败:false */ publicfunctionconnect() { try{ $this->mongo->connect(); returntrue; } catch(MongoConnectionException$e) { $this->error=$e->getMessage(); returnfalse; } } /** *selectdb * *参数:$dbname * *返回值:无 */ publicfunctionselectDb($dbname) { $this->curr_db_name=$dbname; } /** *创建索引:如索引已存在,则返回。 * *参数: *$table_name:表名 *$index:索引-array("id"=>1)-在id字段建立升序索引 *$index_param:其它条件-是否唯一索引等 * *返回值: *成功:true *失败:false */ publicfunctionensureIndex($table_name,$index,$index_param=array()) { $dbname=$this->curr_db_name; $index_param['safe']=1; try{ $this->mongo->$dbname->$table_name->ensureIndex($index,$index_param); returntrue; } catch(MongoCursorException$e) { $this->error=$e->getMessage(); returnfalse; } } /** *插入记录 * *参数: *$table_name:表名 *$record:记录 * *返回值: *成功:true *失败:false */ publicfunctioninsert($table_name,$record) { $dbname=$this->curr_db_name; try{ $this->mongo->$dbname->$table_name->insert($record,array('safe'=>true)); returntrue; } catch(MongoCursorException$e) { $this->error=$e->getMessage(); returnfalse; } } /** *查询表的记录数 * *参数: *$table_name:表名 * *返回值:表的记录数 */ publicfunctioncount($table_name) { $dbname=$this->curr_db_name; return$this->mongo->$dbname->$table_name->count(); } /** *更新记录 * *参数: *$table_name:表名 *$condition:更新条件 *$newdata:新的数据记录 *$options:更新选择-upsert/multiple * *返回值: *成功:true *失败:false */ publicfunctionupdate($table_name,$condition,$newdata,$options=array()) { $dbname=$this->curr_db_name; $options['safe']=1; if(!isset($options['multiple'])) { $options['multiple']=0;} try{ $this->mongo->$dbname->$table_name->update($condition,$newdata,$options); returntrue; } catch(MongoCursorException$e) { $this->error=$e->getMessage(); returnfalse; } } /** *删除记录 * *参数: *$table_name:表名 *$condition:删除条件 *$options:删除选择-justOne * *返回值: *成功:true *失败:false */ publicfunctionremove($table_name,$condition,$options=array()) { $dbname=$this->curr_db_name; $options['safe']=1; try{ $this->mongo->$dbname->$table_name->remove($condition,$options); returntrue; } catch(MongoCursorException$e) { $this->error=$e->getMessage(); returnfalse; }} /** *查找记录 * *参数: *$table_name:表名 *$query_condition:字段查找条件 *$result_condition:查询结果限制条件-limit/sort等 *$fields:获取字段 * *返回值: *成功:记录集 *失败:false */ publicfunctionfind($table_name,$query_condition,$result_condition=array(),$fields=array()) { $dbname=$this->curr_db_name; $cursor=$this->mongo->$dbname->$table_name->find($query_condition,$fields); if(!empty($result_condition['start'])) { $cursor->skip($result_condition['start']); } if(!empty($result_condition['limit'])) { $cursor->limit($result_condition['limit']); } if(!empty($result_condition['sort'])) { $cursor->sort($result_condition['sort']); } $result=array(); try{ while($cursor->hasNext()) { $result[]=$cursor->getNext(); } } catch(MongoConnectionException$e) { $this->error=$e->getMessage(); returnfalse; } catch(MongoCursorTimeoutException$e) { $this->error=$e->getMessage(); returnfalse; } return$result; } /** *查找一条记录 * *参数: *$table_name:表名 *$condition:查找条件 *$fields:获取字段 * *返回值: *成功:一条记录 *失败:false */ publicfunctionfindOne($table_name,$condition,$fields=array()) { $dbname=$this->curr_db_name; return$this->mongo->$dbname->$table_name->findOne($condition,$fields); } /** *获取当前错误信息 * *参数:无 * *返回值:当前错误信息 */ publicfunctiongetError() { return$this->error; } /***NewMongodb类**examples: *$mongo=newNewMongodb("127.0.0.1:11223"); *$mongo->selectDb("test_db"); *创建索引 *$mongo->ensureIndex("test_table",array("id"=>1),array('unique'=>true)); *获取表的记录 *$mongo->count("test_table"); *插入记录 *$mongo->insert("test_table",array("id"=>2,"title"=>"asdqw")); *更新记录 *$mongo->update("test_table",array("id"=>1),array("id"=>1,"title"=>"bbb")); *更新记录-存在时更新,不存在时添加-相当于set *$mongo->update("test_table",array("id"=>1),array("id"=>1,"title"=>"bbb"),array("upsert"=>1)); *查找记录 *$mongo->find("c",array("title"=>"asdqw"),array("start"=>2,"limit"=>2,"sort"=>array("id"=>1))) *查找一条记录 *$mongo->findOne("$mongo->findOne("ttt",array("id"=>1))",array("id"=>1)); *删除记录 *$mongo->remove("ttt",array("title"=>"bbb")); *仅删除一条记录 *$mongo->remove("ttt",array("title"=>"bbb"),array("justOne"=>1)); *获取Mongo操作的错误信息 *$mongo->getError(); */ }