您好,登錄后才能下訂單哦!
這篇文章主要為大家詳細介紹了升級PHP7操作MongoDB的方法,文中示例代碼介紹的非常詳細,具有一定的參考價值,感興趣的小伙伴們可以參考一下。
前言
使用 PHP+MongoDB 的用戶很多,因為 MongoDB 對非結構化數據的存儲很方便。在 PHP5 及以前,官方提供了兩個擴展,Mongo 和 MongoDB,其中 Mongo 是對以 MongoClient 等幾個核心類為基礎的類群進行操作,封裝得很方便,所以基本上都會選擇 Mongo 擴展。
詳情請見官方手冊:https://www.php.net/manual/zh/book.mongo.php
但是隨著 PHP5 升級到 PHP7,官方不再支持 Mongo 擴展,只支持 MongoDB,而 PHP7 的性能提升巨大,讓人無法割舍,所以怎么把 Mongo 替換成 MongoDB 成為了一個亟待解決的問題。MongoDB 引入了命名空間,但是功能封裝非常差,如果非要用原生的擴展,幾乎意味著寫原生的 Mongo 語句。這種想法很違背 ORM 簡化 DB IO 操作帶來的語法問題而專注邏輯優化的思路。
詳情也可參見官方手冊:https://www.php.net/manual/zh/set.mongodb.php
在這種情況之下,MongoDB 官方忍不住了,為了方便使用,增加市場占有率,推出了基于MongoDB 擴展的庫:https://github.com/mongodb/mongo-php-library
該庫的詳細文檔見:https://docs.mongodb.com/php-library/current/reference/
MongoDB 驅動
如果使用原驅動的話,大致語法如下:
<?php use MongoDB\Driver\Manager; use MongoDB\Driver\BulkWrite; use MongoDB\Driver\WriteConcern; use MongoDB\Driver\Query; use MongoDB\Driver\Command; class MongoDb { protected $mongodb; protected $database; protected $collection; protected $bulk; protected $writeConcern; protected $defaultConfig = [ 'hostname' => 'localhost', 'port' => '27017', 'username' => '', 'password' => '', 'database' => 'test' ]; public function __construct($config) { $config = array_merge($this->defaultConfig, $config); $mongoServer = "mongodb://"; if ($config['username']) { $mongoServer .= $config['username'] . ':' . $config['password'] . '@'; } $mongoServer .= $config['hostname']; if ($config['port']) { $mongoServer .= ':' . $config['port']; } $mongoServer .= '/' . $config['database']; $this->mongodb = new Manager($mongoServer); $this->database = $config['database']; $this->collection = $config['collection']; $this->bulk = new BulkWrite(); $this->writeConcern = new WriteConcern(WriteConcern::MAJORITY, 100); } public function query($where = [], $option = []) { $query = new Query($where, $option); $result = $this->mongodb->executeQuery("$this->database.$this->collection", $query); return json_encode($result); } public function count($where = []) { $command = new Command(['count' => $this->collection, 'query' => $where]); $result = $this->mongodb->executeCommand($this->database, $command); $res = $result->toArray(); $count = 0; if ($res) { $count = $res[0]->n; } return $count; } public function update($where = [], $update = [], $upsert = false) { $this->bulk->update($where, ['$set' => $update], ['multi' => true, 'upsert' => $upsert]); $result = $this->mongodb->executeBulkWrite("$this->database.$this->collection", $this->bulk, $this->writeConcern); return $result->getModifiedCount(); } public function insert($data = []) { $this->bulk->insert($data); $result = $this->mongodb->executeBulkWrite("$this->database.$this->collection", $this->bulk, $this->writeConcern); return $result->getInsertedCount(); } public function delete($where = [], $limit = 1) { $this->bulk->delete($where, ['limit' => $limit]); $result = $this->mongodb->executeBulkWrite("$this->database.$this->collection", $this->bulk, $this->writeConcern); return $result->getDeletedCount(); } }
這樣的語法和之前差異太大,改動不方便,換 PHP MongoDB 庫
MongoDB 庫
1.連接
原
new MongoClient();
新
new MongoDB\Client();
2.新增
原
$collention->insert($array, $options);
新
$resultOne = $collention->insertOne($array, $options);//單 $lastId = $resultOne->getInsertedId(); $resultMany = $collention->insertMany($array, $options);//多 $count = $resultMany->getInsertedCount();
3.修改
原
$collention->update($condition, [ '$set' => $values ,[ 'multiple' => true//多條,單條false ]);
新
$collection->updateOne( ['state' => 'ny'], ['$set' => ['country' => 'us']] ); $updateResult = $collection->updateMany( ['state' => 'ny'], ['$set' => ['country' => 'us']] ); $count = $updateResult->getModifiedCount();
4.查詢
原
$cursor = $collection->find($condition, [ 'name' => true//指定字段 ]); $cursor->skip(5); $cursor->limit(5); $cursor->sort([ 'time' => -1 ]);
新
$cursor = $collection->find($condition, [ 'skip' => 5, 'limit' => 5, 'sort' => [ 'time' => -1 ],//排序 'projection' => [ 'name' => 1//指定字段 ] ]);
5.刪除
原
$collention->remove($condition, [ 'justOne' => false//刪單條 ]); $collention->remove([]);//刪所有
新
$result = $collention->deleteOne($condition, $options); $collention->deleteMany($condition, $options); $result->getDeletedCount();
補充
有些人可能習慣以類似 MySQL 的自增 ID 來處理數據,以前可能使用 findAndModify() 方法來查詢并修改:
$collention->findAndModify([ '_id' => $tableName//我在自增表中用其它的表名作主鍵 ], [ '$inc' => ['id' => 1]//自增 ], [ '_id' => 0 ], [ 'new' => 1//返回修改后的結果,默認是修改前的 ]);
現在使用 MongoDB 庫的話需要修改為:
$collention->findOneAndUpdate([ '_id' => $tableName ], [ '$inc' => ['id' => 1] ], [ 'projection' => ['id' => 1], 'returnDocument' => MongoDB\Operation\FindOneAndUpdate::RETURN_DOCUMENT_AFTER ]);
以上就是升級PHP7操作MongoDB方法的簡略介紹,當然詳細使用上面的不同還得要大家自己使用過才領會。如果想了解更多,歡迎關注億速云行業資訊頻道哦!
免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。