PHP7-mongoDB扩展使用

最近在做的项目需要将 PHP5.6 升级到 PHP7.0，使用过 PHP-mongo 扩展的同学应该知道，PHP7.0 的 mongodb 扩展是完全不兼容 PHP5.6 的 mongo 扩展的，php-mongodb 改如何使用呢。

下面直接说明各种方法的使用:

1.mongodb 连接：

private function connect($confArr) {
    try{$connStr = "mongodb://" . $confArr['host'] . ":" . $confArr['port'] . "/" . $confArr['db_name'];
        $options = array('username' => $confArr['username'],
            'password' => $confArr['password'],
            'readPreference' => $confArr['read_preference'],
            'connectTimeoutMS' => intval($confArr['connect_timeout_ms']),
            'socketTimeoutMS' => intval($confArr['socket_timeout_ms']),
        );
        $mc = new MongoDB\Driver\Manager($connStr, $options);
        return $mc;
    }
    catch(Exception $e){return false;}
}

2. 查询 find:

public function find($query = array(), $fields = array(), $collection, $sort = array(), $limit = 0, $skip = 0) {$conn = $this->connect();
    if (empty($conn)) {return false;}
    try {$data = array();
        $options = array();
        if (!empty($query)) {$options['projection'] = array_fill_keys($fields, 1);
        }
        if (!empty($sort)) {$options['sort'] = $sort;
        }
        if (!empty($limit)) {$options['skip'] = $skip;
            $options['limit'] = $limit;
        }
        $mongoQuery = new MongoDB\Driver\Query($query, $options);
        $readPreference = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::RP_SECONDARY);
        $cursor = $conn->executeQuery($collection, $mongoQuery, $readPreference);
        foreach($cursor as $value) {$data[] = (array)$value;
        }
        return $data;
    } catch (Exception $e) {// 记录错误日志}
    return false;
}

3. 插入操作 insert:

public function insert($addArr, $collection) {if (empty($addArr) || !is_array($addArr)) {return false;}
    $conn = $this->connect();
    if (empty($conn)) {return false;}
    try {$bulk = new MongoDB\Driver\BulkWrite();
        $bulk->insert($addArr);
        $writeConcern = new MongoDB\Driver\WriteConcern(MongoDB\Driver\WriteConcern::MAJORITY, 6000);
        $result = $conn->executeBulkWrite($collection, $bulk, $writeConcern);
        if ($result->getInsertedCount()) {return true;}
    } catch (Exception $e) {// 记录错误日志}
    return false;
}

4. 删除 delete：

public function delete($whereArr, $options = array(), $collection) {if (empty($whereArr)) {return false;}
    if (!isset($options['justOne'])) {
        $options = array('justOne' => false,);
    }
    $conn = $this->connect();
    if (empty($conn)) {return false;}
    try {$bulk = new MongoDB\Driver\BulkWrite();
        $bulk->delete($whereArr, $options);
        $writeConcern = new MongoDB\Driver\WriteConcern(MongoDB\Driver\WriteConcern::MAJORITY, 30000);
        $result = $conn->executeBulkWrite($collection, $bulk, $writeConcern);
        return true;
    } catch (Exception $e) {// 记录错误日志}
    return false;
}

5. 执行 command 操作:

private function command($params, $dbName) {$conn = $this->connect();
    if (empty($conn)) {return false;}
    try {$cmd = new MongoDB\Driver\Command($params);
        $result = $conn->executeCommand($dbName, $cmd);
        return $result;
    } catch (Exception $e) {// 记录错误}
    return false;
}

6. 统计 count:

public function count($query, $collection) {
    try {
        $cmd = array(
            'count' => $collection,
            'query' => $query,
        );
        $res = $this->command($cmd);
        $result = $res->toArray();
        return $result[0]->n;
    } catch (Exception $e) {// 记录错误}
    return false;
}

7. 聚合 distinct:

public function distinct($key, $where, $collection) {
    try {
        $cmd = array(
            'distinct' => $collection,
            'key' => $key,
            'query' => $where,
        );
        $res = $this->command($cmd);
        $result = $res->toArray();
        return $result[0]->values;
    } catch (Exception $e) {// 记录错误}
    return false;
}

8.aggregate 操作：

public function aggregate($where, $group, $collection) {
    try {
        $cmd = array(
            'aggregate' => $collection,
            'pipeline' => array(
                array('$match' => $where,),
                array('$group' => $group,),
            ),
            'explain' => false,
        );
        $res = $this->command($cmd);
        if (!$res) {return false;}
        $result = $res->toArray();
        return $result[0]->total;
    } catch (Exception $e) {// 记录错误}
    return false;
}