PHP mongodb操作类定义与用法示例【适合mongodb2.x和mongodb3.x】

本文实例讲述了PHP mongodb操作类定义与用法。分享给大家供大家参考，具体如下：

在别人基础上修改的mongodb操作类，适合mongodb2.x和mongodb3.x

<?php/*** Mongodb类** examples:* $mongo = new HMongodb("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* $mongo->insert("test_table", array("id"=>2, "title"=>"asdqw"));* 更新记录 array('$set'=>$newdata) 只修改指定字段* $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("test_table", array("title"=>"asdqw"), array("start"=>2,"limit"=>2,"sort"=>array("id"=>1)))* 查找一条记录* $mongo->findOne("test_table", 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();*/class HMongodb {  public $_idType=1;//主键类型 1 string 0 obj  //Mongodb连接  var $mongo;  var $curr_db_name;  var $curr_table_name;  var $error;  /**  * 构造函数  * 支持传入多个mongo_server(1.一个出问题时连接其它的server 2.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  * $auto_balance:是否自动做负载均衡，默认是  *  * 返回值：  * 成功：mongo object  * 失败：false  */  function __construct($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_keys as $key)        {          if ($key != $prior_server_num - 1)          {            $mongo_server_str .= ',' . $mongo_server[$key];          }        }      }      else      {        $mongo_server_str = implode(',', $mongo_server);      }         }    else    {      $mongo_server_str = trim($mongo_server);      //$config_arr=explode('/',$mongo_server);      //$this->curr_db_name = array_pop($config_arr);      $last_index=strrpos($mongo_server_str,'/');      $db_name=substr($mongo_server_str,$last_index+1,strlen($mongo_server_str));      $this->curr_db_name = $db_name;//获取dbname      //print_r($db_name);exit;    }    try {      $this->mongo = new MongoClient($mongo_server, array('connect'=>$connect));    }    catch (MongoConnectionException $e)    {      $this->error = $e->getMessage();      return false;    }  }  function getInstance($mongo_server, $flag=array())  {    static $mongodb_arr;    if (empty($flag['tag']))    {      $flag['tag'] = 'default';     }    if (isset($flag['force']) && $flag['force'] == true)    {      $mongo = new HMongodb($mongo_server);      if (empty($mongodb_arr[$flag['tag']]))      {        $mongodb_arr[$flag['tag']] = $mongo;      }      return $mongo;    }    else if (isset($mongodb_arr[$flag['tag']]) && is_resource($mongodb_arr[$flag['tag']]))    {      return $mongodb_arr[$flag['tag']];    }    else    {      $mongo = new HMongodb($mongo_server);      $mongodb_arr[$flag['tag']] = $mongo;      return $mongo;         }     }  /**  * 连接mongodb server  *  * 参数：无  *  * 返回值：  * 成功：true  * 失败：false  */  function connect()  {    try {      $this->mongo->connect();      return true;    }    catch (MongoConnectionException $e)    {      $this->error = $e->getMessage();      return false;    }  }  /**  * select db  *  * 参数：$dbname  *  * 返回值：无  */  function selectDb($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  * $index_param:其它条件-是否唯一索引等  *  * 返回值：  * 成功：true  * 失败：false  */  function ensureIndex($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);      return true;    }    catch (MongoCursorException $e)    {      $this->error = $e->getMessage();      return false;    }  }  /**  * 插入记录  *  * 参数：  * $table_name:表名  * $record:记录  *  * 返回值：  * 成功：true  * 失败：false  */  function insert($table_name, $record)  {    $dbname = $this->curr_db_name;    try {      $this->mongo->$dbname->$table_name->insert($record, array('safe'=>true));      return true;    }    catch (MongoCursorException $e)    {      $this->error = $e->getMessage();      return false;    }  }  /**  * 查询表的记录数  *  * 参数：  * $table_name:表名  *  * 返回值：表的记录数  */  function count($table_name,$query_condition=array())  {    $dbname = $this->curr_db_name;    return $this->mongo->$dbname->$table_name->find($query_condition)->count();  }  //$newdata存在有_id则更新 不存在则插入  function save($table_name, $newdata) {    $dbname = $this->curr_db_name;    if($this->_idType && $newdata['_id']){      $newdata['_id']=new MongoId($newdata['_id']);    }    return $this->mongo->$dbname->$table_name->save($newdata);  }  /**  * 更新记录  *  * 参数：  * $table_name:表名  * $condition:更新条件  * $newdata:新的数据记录  * $options:更新选择-upsert/multiple  *  * 返回值：  * 成功：true  * 失败：false  */  function update($table_name, $condition, $newdata, $options=array())  {  if($this->_idType && $condition['_id']){      $condition['_id']=new MongoId($condition['_id']);    }    $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);      return true;    }    catch (MongoCursorException $e)    {      $this->error = $e->getMessage();      return false;    }     }  /**  * 删除记录  *  * 参数：  * $table_name:表名  * $condition:删除条件  * $options:删除选择-justOne  *  * 返回值：  * 成功：true  * 失败：false  */  function remove($table_name, $condition, $options=array())  {    if($this->_idType && $condition['_id']){      $condition['_id']=new MongoId($condition['_id']);    }    $dbname = $this->curr_db_name;    $options['safe'] = 1;    try {      $this->mongo->$dbname->$table_name->remove($condition, $options);      return true;    }    catch (MongoCursorException $e)    {      $this->error = $e->getMessage();      return false;    }     }  /**  * 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  * $fields:获取字段  *  * 返回值：  * 成功：记录集  * 失败：false  */  function find($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())      {        $row= $cursor->getNext();        //print_r($cursor->getNext());exit;        if($this->_idType && is_object($row['_id'])){          $row['_id']=$row['_id']->__toString();//转换字符串        }        $result[] =$row;      }    }    catch (MongoConnectionException $e)    {      $this->error = $e->getMessage();      return false;    }    catch (MongoCursorTimeoutException $e)    {      $this->error = $e->getMessage();      return false;    }    return $result;  }  /**  * 查找一条记录  *  * 参数：  * $table_name:表名  * $condition:查找条件  * $fields:获取字段  *  * 返回值：  * 成功：一条记录  * 失败：false  */  function findOne($table_name, $condition, $fields=array())  {    if($this->_idType && $condition['_id']){      $condition['_id']=new MongoId($condition['_id']);    }    $dbname = $this->curr_db_name;    $row=$this->mongo->$dbname->$table_name->findOne($condition, $fields);    if($this->_idType && is_object($row['_id'])){      $row['_id']=$row['_id']->__toString();//转换字符串    }    return $row;  }  /**  * 获取当前错误信息  *  * 参数：无  *  * 返回值：当前错误信息  */  function getError()  {    return $this->error;  }  //返回原生mongodb collection集合对象  function getCollection($table_name){    $dbname = $this->curr_db_name;    return $this->mongo->$dbname->$table_name;  }  //分组统计  function group($table_name,$keys,$initial,$reduce,$condition){    $dbname = $this->curr_db_name;    $g = $this->mongo->$dbname->$table_name->group($keys, $initial, $reduce,$condition);    return $g;  }}