Home > Backend Development > PHP Tutorial > PHP mongodb operation class with a few simple examples

PHP mongodb operation class with a few simple examples

高洛峰
Release: 2023-03-04 06:44:01
Original
1650 people have browsed it

Script House has published several similar articles before, you can refer to them.

Core code:

class NewMongodb {  
  private $mongo;  //NewMongodb连接
  private $curr_db_name;
  private $curr_table_name;
  private $error;
  public $config;
  public function getInstance($mongo_server, $flag=array())
  {
    static $NewMongodb_arr;
    if (empty($flag['tag']))
    {
      $flag['tag'] = 'default';     }
    if (isset($flag['force']) && $flag['force'] == true)
    {
      $mongo = new NewMongodb($mongo_server);
      if (empty($NewMongodb_arr[$flag['tag']]))
      {
        $NewMongodb_arr[$flag['tag']] = $mongo;
      }
      return $mongo;
    }
    else if (isset($NewMongodb_arr[$flag['tag']]) && is_resource($NewMongodb_arr[$flag['tag']]))
    {
      return $NewMongodb_arr[$flag['tag']];
    }
    else
    {
      $mongo = new NewMongodb($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
   * $auto_balance:是否自动做负载均衡,默认是
   *
   * 返回值:
   * 成功:mongo object
   * 失败:false
   */
  public function __construct($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 = $mongo_server;
   }
   try {
    $this->mongo = new MongoClient($mongo_server, array('connect'=>$connect));
   }
   catch (MongoConnectionException $e)
   {
    $this->error = $e->getMessage();
    return false;
   }
  }
   
  /**
  * 连接NewMongodb server
  *
  * 参数:无
  *
  * 返回值:
  * 成功:true
  * 失败:false
  */
  public 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
  */
  public 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
  * $index_param:其它条件-是否唯一索引等
  *
  * 返回值:
  * 成功:true
  * 失败:false
  */
  public function ensureIndex($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
  * $record:记录
  *
  * 返回值:
  * 成功:true
  * 失败:false
  */
  public function insert($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:
  * $table_name:表名
  *
  * 返回值:表的记录数
  */
  public function count($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
  * $options:更新选择-upsert/multiple
  *
  * 返回值:
  * 成功:true
  * 失败:false
  */
  public function update($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);
      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
  * $options:删除选择-justOne
  *
  * 返回值:
  * 成功:true
  * 失败:false
  */
  public function remove($table_name, $condition, $options=array())
  {
    $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
  * $fields:获取字段
  *
  * 返回值:
  * 成功:记录集
  * 失败:false
  */
  public function find($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())
      {
        $result[] = $cursor->getNext();
      }
    }
    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
  * $fields:获取字段
  *
  * 返回值:
  * 成功:一条记录
  * 失败:false
  */
  public function findOne($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
  */
  public function getError()
  {
    return $this->error;
  }
  /*** NewMongodb类** examples:
   * $mongo = new NewMongodb("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();
  */
}
Copy after login


For more php mongodb operation classes with a few simple examples, please pay attention to the PHP Chinese website for related articles!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template