PHP mongodb操作类定义与用法示例

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

 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;  }     }
  
  function connect()
  {
    try {
      $this->mongo->connect();
      return true;
    }
    catch (MongoConnectionException $e)
    {
      $this->error = $e->getMessage();
      return false;
    }
  }
  
  function selectDb($dbname)
  {
    $this->curr_db_name = $dbname;
  }
  
  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;
    }
  }
  
  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;
    }
  }
  
  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);
  }
  
  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;
    }     }
  
  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;
    }     }
  
  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;
  }
  
  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;
  }
  
  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;
  }
}

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