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，詳見的數據庫操作都有了，小伙伴可以參考下。

　　mongo_db.php

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 <?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 $table = NULL;   /** * 初始化類，得到mongo的實例對象 */ public function __construct($host = NULL, $port = NULL, $dbname = NULL, $table = NULL) {   if (NULL === $dbname) { $this->throwError('集合不能為空！'); }   //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; //}   /** * 插入一條數據 * @param array $doc */ public function insert($doc = array()) { if (empty($doc)) { $this->throwError('插入的數據不能為空！'); } //保存數據信息 try { if (!$this->db->insert($doc)) { throw new MongoException('插入數據失敗'); } } catch (MongoException $e) { $this->throwError($e->getMessage()); } }   /** * 插入多條數據信息 * @param array $doc */ public function insertMulti($doc = array()) { if (empty($doc)) { $this->throwError('插入的數據不能為空！'); } //插入數據信息 foreach ($doc as $key => $val) { //判斷$val是不是數組 if (is_array($val)) { $this->insert($val); } } }   /** * 查找一條記錄 * @return array|null */ public function findOne($where = NULL) { if (NULL === $where) { try { if ($result = $this->db->findOne()) { return $result; } else { throw new MongoException('查找數據失敗'); } } catch (MongoException $e) { $this->throwError($