摘要：最近在做的項目需要將升級到，使用過擴展的同學應該知道，的擴展是完全不兼容的擴展的，改如何使用呢。

最近在做的項目需要將PHP5.6升級到PHP7.0，使用過PHP-mongo擴展的同學應該知道，PHP7.0的mongodb擴展是完全不兼容PHP5.6的mongo擴展的，php-mongodb改如何使用呢。

下面直接說明各種方法的使用:

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"]),
        );
        $mc = new MongoDBDriverManager($connStr, $options);
        return $mc;
    }
    catch(Exception $e){
        return false;
    }
}

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;
        }
        $mongoQuery = new MongoDBDriverQuery($query, $options);
        $readPreference = new MongoDBDriverReadPreference(MongoDBDriverReadPreference::RP_SECONDARY);
        $cursor = $conn->executeQuery($collection, $mongoQuery, $readPreference);
        foreach($cursor as $value) {
            $data[] = (array)$value;
        }
        return $data;
    } catch (Exception $e) {
        //記錄錯誤日志
    }
    return false;
}

public function insert($addArr, $collection) {
    if (empty($addArr) || !is_array($addArr)) {
        return false;
    }
    $conn = $this->connect();
    if (empty($conn)) {
        return false;
    }
    try {
        $bulk = new MongoDBDriverBulkWrite();
        $bulk->insert($addArr);
        $writeConcern = new MongoDBDriverWriteConcern(MongoDBDriverWriteConcern::MAJORITY, 6000);
        $result = $conn->executeBulkWrite($collection, $bulk, $writeConcern);
        if ($result->getInsertedCount()) {
            return true;
        }
    } catch (Exception $e) {
        //記錄錯誤日志
    }
    return false;
}

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 MongoDBDriverBulkWrite();
        $bulk->delete($whereArr, $options);
        $writeConcern = new MongoDBDriverWriteConcern(MongoDBDriverWriteConcern::MAJORITY, 30000);
        $result = $conn->executeBulkWrite($collection, $bulk, $writeConcern);
        return true;
    } catch (Exception $e) {
        //記錄錯誤日志
    }
    return false;
}

private function command($params, $dbName) {
    $conn = $this->connect();
    if (empty($conn)) {
        return false;
    }
    try {
        $cmd = new MongoDBDriverCommand($params);
        $result = $conn->executeCommand($dbName, $cmd);
        return $result;
    } catch (Exception $e) {
        //記錄錯誤
    }
    return false;
}

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) {
        //記錄錯誤
    }
    return false;
}

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) {
        //記錄錯誤
    }
    return false;
}

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) {
        //記錄錯誤
    }
    return false;
}