php实现的mongodb操作类_PHP教程

php实现的mongodb操作类

 　　说到php连mongoDB，不得不先介绍一下php的官方手册，网址在：http://us.php.net/manual/en/book.mongo.php，接下来给大家分享一个本人常用的MONGODB的操作类，详见的数据库操作都有了，小伙伴可以参考下。

　　mongo_db.php

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/** * 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 $table = NULL;   /** * 初始化类，得到mongo的实例对象 */ public function __construct($host = NULL, $port = NULL, $dbname = NULL, $table = NULL) {   if (NULL === $dbname) { $this->throwError('集合不能为空！'); }   //判断是否传递了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->$table; } }   public function getVersion() { return MongoClient::VERSION; }   /** * 单例模式 * @return Mongo|null */ //public static function getInstance($host=null, $port=null, $dbname=null, $table=null){ // // if(!(self::$instanceof instanceof self)){ // self::$instanceof = new self($host, $port, $dbname, $table); // } // // return self::$instanceof; //}   /** * 插入一条数据 * @param array $doc */ public function insert($doc = array()) { if (empty($doc)) { $this->throwError('插入的数据不能为空！'); } //保存数据信息 try { if (!$this->db->insert($doc)) { throw new MongoException('插入数据失败'); } } catch (MongoException $e) { $this->throwError($e->getMessage()); } }   /** * 插入多条数据信息 * @param array $doc */ public function insertMulti($doc = array()) { if (empty($doc)) { $this->throwError('插入的数据不能为空！'); } //插入数据信息 foreach ($doc as $key => $val) { //判断$val是不是数组 if (is_array($val)) { $this->insert($val); } } }   /** * 查找一条记录 * @return array|null */ public function findOne($where = NULL) { if (NULL === $where) { try { if ($result = $this->db->findOne()) { return $result; } else { throw new MongoException('查找数据失败'); } } catch (MongoException $e) { $this->throwError($e->getMessage()); } } else { try { if ($result = $this->db->findOne($where)) { return $result; } else { throw new MongoException('查找数据失败'); } } catch (MongoException $e) { $this->throwError($e->getMessage()); } }   }   /** * todo 带条件的随后做 * 查找所有的文档 * @return MongoCursor */ public function find($where = NULL) { if (NULL === $where) {   try { if ($result = $this->db->find()) {   } else { throw new MongoException('查找数据失败'); } } catch (MongoException $e) { $this->throwError($e->getMessage()); } } else { try { if ($result = $this->db->find($where)) {   } else { throw new MongoException('查找数据失败'); } } catch (MongoException $e) { $this->throwError($e->getMessage()); } }   $arr = array(); foreach ($result as $id => $val) { $arr[] = $val; }   return $arr; }   /** * 获取记录条数 * @return int */ public function getCount() { try { if ($count = $this->db->count()) { return $count; } else { throw new MongoException('查找总数失败'); } } catch (MongoException $e) { $this->throwError($e->getMessage()); } }   /** * 获取所有的数据库 * @return array */ public function getDbs() { return $this->mongo->listDBs(); }   /** * 删除数据库 * @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('请输入要删除的数据库名称'); }   /** * 强制关闭数据库的链接 */ public function closeDb() { $this->mongo->close(TRUE); }   /** * 输出错误信息 * @param $errorInfo 错误内容 */ public function throwError($errorInfo='') { echo " 出错了：$errorInfo "; die(); }   }

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