PHP7 MongoDB扩展方法如何改写为长尾词？

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前言：最近在做的项目中需要将PHP5.6升级到PHP7.0，使用过PHP-mongo扩展的学应该知道，PHP7.0的mongodb扩展与PHP5.6的不兼容。下面直接说明如何使用php-mongodb。

方法一：使用composer安装

1.在项目根目录下创建一个composer.json文件，内容如下：

json{ require: { php-mongodb/mongodb: ^1.3 }}

2.在终端执行命令：`composer install`

3.在代码中引入MongoDB客户端：

phpuse MongoDB\Client;$client=new Client(mongodb://localhost:27017);

方法二：使用PECL安装

1.下载php-mongodb的源码：https://pecl.php.net/package/mongodb

2.解压源码，进入源码目录

3.编译安装：`/usr/bin/phpize`，然后执行`./configure`，最后使用`make`和`make install`进行安装

4.在php.ini中启用mongodb扩展：`extension=mongodb.so`

5.在代码中引入MongoDB客户端：

phpuse MongoDB\Client;$client=new Client(mongodb://localhost:27017);

方法三：使用MongoDB PHP Driver

1.下载MongoDB PHP Driver：https://pecl.php.net/package/mongodb

2.解压源码，进入源码目录

3.编译安装：`/usr/bin/phpize`，然后执行`./configure`，最后使用`make`和`make install`进行安装

4.在php.ini中启用mongodb扩展：`extension=mongodb.so`

5.在代码中引入MongoDB客户端：

phpuse MongoDB\Driver\Manager;$manager=new Manager(mongodb://localhost:27017);

以上三种方法均可实现php-mongodb的安装和使用，具体选择哪种方法可根据实际情况进行。

前言

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; }

总结

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