一、軟件環境(版本非必須) php v5.6 擴展：MongoDB nginx v1.11 mongodb v3.2
note: 必須安裝MongoDB擴展
二、連接 $client = new MongoClient($server, $option);
$server 變量是個字符串，描述要連接的服務器
mongodb://[username:password@]host1[:port1][,host2[:port2:],...]/db
其中必要的是：
username 數據庫用戶名 password 數據庫密碼 host 服務器地址 port 數據庫監聽端口 三、選表（集合） 選擇數據庫 選擇集合 $db = $client->{$db_name};
返回MongoDB類 類文檔傳送門
$collection = $db->{$collection_name};
返回MongoCollection類 類文檔傳送門
四、查詢數據 $cursor = $collection->find($filter);
返回MongoCursor類 類文檔傳送門
1. $filter參數
mongoshell find函數參數使用：傳送門
php代碼編寫
// 查詢值大於value的文檔 $filter[$gtKey] = array('$gt' => $value); // regexKey模糊查詢 $filter[$regexKey] = new MongoRegex('/'.$regexValue.'/'); $collection->find($filter);
注意：
模糊查詢需要使用MongoRegex類來使用，否則不識別 比較大小時，$value 的值需要與mongodb中存儲的類型一致 2. 利用MongoCursor進行分頁等操作 // 返回MongoCursor，可以利用MongoCursor的方法遍歷數據 // 或者使用iterator_to_array($cursor)轉換成數組 $cursor = $cursor ->sort(array($field=>'-1 or 1')) // 1是正序，-1是反序 ->skip($start) // 數據起始位置 ->limit($size); // 數據結束位置為$start+$size // 返回int型數值 $count = $cursor ->find($filter) ->count(); $data = iterator_to_array($cursor)
不再講解如何使用MongoCursor遍歷數據
五、總結
使用php連接MongoDB查詢數據總體來說非常簡單。連接、根據條件查詢、分頁，三步搞定。
注意事項：
使用單例模式獲取MongoDB實例 模糊查詢需要借助MongoRegex類 操作完成要** 關閉連接 **
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