php實現的mongodb操作類

 　　說到php連mongoDB，不得不先介紹一下php的官方手冊，網址在：http://us.php.net/manual/en/book.mongo.php，接下來給大家分享一個本人常用的MONGODB的操作類，詳見的資料庫操作都有了，小夥伴可以參考下。

　　mongo_db.php

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<?php   /** * Created by PhpStorm. * User: yangyulong * Date: 2015/5/26 * Time: 13:45 */ class Mongo_db { private static $instanceof = NULL; public $mongo; private $host = 'localhost'; private $port = '27017';   private $db; public $dbname; private $table = NULL;   /** * 初始化類，得到mongo的執行個體對象 */ public function __construct($host = NULL, $port = NULL, $dbname = NULL, $table = NULL) {   if (NULL === $dbname) { $this->throwError('集合不可為空！'); }   //判斷是否傳遞了host和port if (NULL !== $host) { $this->host = $host; }   if (NULL !== $port) { $this->port = $port; }   $this->table = $table;   $this->mongo = new MongoClient($this->host . ':' . $this->port); if ($this->getVersion() >= '0.9.0') { $this->dbname = $this->mongo->selectDB($dbname); $this->db = $this->dbname->selectCollection($table); } else { $this->db = $this->mongo->$dbname->$table; } }   public function getVersion() { return MongoClient::VERSION; }   /** * 單例模式 * @return Mongo|null */ //public static function getInstance($host=null, $port=null, $dbname=null, $table=null){ // // if(!(self::$instanceof instanceof self)){ // self::$instanceof = new self($host, $port, $dbname, $table); // } // // return self::$instanceof; //}   /** * 插入一條資料 * @param array $doc */ public function insert($doc = array()) { if (empty($doc)) { $this->throwError('插入的資料不可為空！'); } //儲存資料資訊 try { if (!$this->db->insert($doc)) { throw new MongoException('插入資料失敗'); } } catch (MongoException $e) { $this->throwError($e->getMessage()); } }   /** * 插入多條資料資訊 * @param array $doc */ public function insertMulti($doc = array()) { if (empty($doc)) { $this->throwError('插入的資料不可為空！'); } //插入資料資訊 foreach ($doc as $key => $val) { //判斷$val是不是數組 if (is_array($val)) { $this->insert($val); } } }   /** * 尋找一條記錄 * @return array|null */ public function findOne($where = NULL) { if (NULL === $where) { try { if ($result = $this->db->findOne()) { return $result; } else { throw new MongoException('尋找資料失敗'); } } catch (MongoException $e) { $this->throwError($e->getMessage()); } } else { try { if ($result = $this->db->findOne($where)) { return $result; } else { throw new MongoException('尋找資料失敗'); } } catch (MongoException $e) { $this->throwError($e->getMessage()); } }   }   /** * todo 帶條件的隨後做 * 尋找所有的文檔 * @return MongoCursor */ public function find($where = NULL) { if (NULL === $where) {   try { if ($result = $this->db->find()) {   } else { throw new MongoException('尋找資料失敗'); } } catch (MongoException $e) { $this->throwError($e->getMessage()); } } else { try { if ($result = $this->db->find($where)) {   } else { throw new MongoException('尋找資料失敗'); } } catch (MongoException $e) { $this->throwError($e->getMessage()); } }   $arr = array(); foreach ($result as $id => $val) { $arr[] = $val; }   return $arr; }   /** * 擷取記錄條數 * @return int */ public function getCount() { try { if ($count = $this->db->count()) { return $count; } else { throw new MongoException('尋找總數失敗'); } } catch (MongoException $e) { $this->throwError($e->getMessage()); } }   /** * 擷取所有的資料庫 * @return array */ public function getDbs() { return $this->mongo->listDBs(); }   /** * 刪除資料庫 * @param null $dbname * @return mixed */ public function dropDb($dbname = NULL) { if (NULL !== $dbname) { $retult = $this->mongo->dropDB($dbname); if ($retult['ok']) { return TRUE; } else { return FALSE; } } $this->throwError('請輸入要刪除的資料庫名稱'); }   /** * 強制關閉資料庫的連結 */ public function closeDb() { $this->mongo->close(TRUE); }   /** * 輸出錯誤資訊 * @param $errorInfo 錯誤內容 */ public function throwError($errorInfo='') { echo "<h3>出錯了：$errorInfo</h3>"; die(); }   }

　　以上所述就是本文的全部內容了，希望大家能夠喜歡。