Reference

安装PECL

PECL is a repository for PHP Extensions, providing a directory of all known extensions and hosting facilities for downloading and development of PHP extensions.The packaging and distribution system used by PECL is shared with its sister, PEAR.

下载扩展

放入目录

下载完你需要的二进制包后，解压压缩包，将 php_mongodb.dll文件添加到你的PHP扩展目录中(ext)。ext目录通常在PHP安装目录下的ext目录。

打开php配置文件 php.ini 添加以下配置：

extension=php_mongodb.dll

重启服务器。

image

这样就安装完成了扩展。

下载codeigniter-mongodb-library

用git clone下载后目录结构为

codeigniter-mongodb-library

├── application

│ ├── config

│ │ └── mongo_db.php

│ └── libraries

│ └── Mongo_db.php

├── LICENSE

└── README.md

3 directories, 4 files

添加文件

config

然后将config\mongo_db.php放到Codeigniter框架application的conf目录下，并配置对应的选项。

/*

| -------------------------------------------------------------------------

| DATABASE CONNECTIVITY SETTINGS

| -------------------------------------------------------------------------

| This file will contain the settings needed to access your Mongo database.

|

|

| ------------------------------------------------------------------------

| EXPLANATION OF VARIABLES

| ------------------------------------------------------------------------

|

| ['hostname'] The hostname of your database server.

| ['username'] The username used to connect to the database

| ['password'] The password used to connect to the database

| ['database'] The name of the database you want to connect to

| ['db_debug'] TRUE/FALSE - Whether database errors should be displayed.

| ['write_concerns'] Default is 1: acknowledge write operations. ref(http://php.net/manual/en/mongo.writeconcerns.php)

| ['journal'] Default is TRUE : journal flushed to disk. ref(http://php.net/manual/en/mongo.writeconcerns.php)

| ['read_preference'] Set the read preference for this connection. ref (http://php.net/manual/en/mongoclient.setreadpreference.php)

| ['read_preference_tags'] Set the read preference for this connection. ref (http://php.net/manual/en/mongoclient.setreadpreference.php)

|

| The $config['mongo_db']['active'] variable lets you choose which connection group to

| make active. By default there is only one group (the 'default' group).

|

*/

$config['mongo_db']['active'] = 'default';

$config['mongo_db']['default']['no_auth'] = true;

$config['mongo_db']['default']['hostname'] = 'localhost';

$config['mongo_db']['default']['port'] = '27017';

$config['mongo_db']['default']['username'] = '';

$config['mongo_db']['default']['password'] = '';

$config['mongo_db']['default']['database'] = 'ci_test'; // 测试数据库ci_test

$config['mongo_db']['default']['db_debug'] = TRUE;

$config['mongo_db']['default']['return_as'] = 'array';

$config['mongo_db']['default']['write_concerns'] = (int)1;

$config['mongo_db']['default']['journal'] = TRUE;

$config['mongo_db']['default']['read_preference'] = 'primary';

$config['mongo_db']['default']['read_concern'] = 'local'; //'local', 'majority' or 'linearizable'

$config['mongo_db']['default']['legacy_support'] = TRUE;

/* End of file database.php */

/* Location: ./application/config/database.php */

可以修改 mongo_db下面的键名 default ，但是我这里保持默认。

修改autoload.php

image

将mongo_db加入到$autoload['libraries']的array中。

libraries

将 下载文件夹中的 libraries\Mongo_db.php 放到对应框架的application中去application/libraries/Mongo_db.php

使用

在controller的方法中这样使用

public function index()

{

$this->load->library('mongo_db',array('activate'=>'default'),'mongo_db');

$res = $this->mongo_db->get('test');

echo 'codeigniter + MongoDB';

echo '

';

print_r($res);

}

image

image

更好的是直接看 lib 中的源码！注释里面都有usage

get

@usage : $this->mongo_db->get('foo');

get($collection = "")

选择查看的 集合名称 string类型，返回该集合所有内容(所有字段)

get_where

@usage : $this->mongo_db->get_where('foo', array('bar' => 'something'));

get_where($collection = "", $where = array())

参数一：集合名称 字符串

参数二：条件 array数组

就是和find命令一样，返回符合where这个条件的内容。

select

@usage: $this->mongo_db->select(array('foo', 'bar'))->get('foobar');

select($includes = array(), $excludes = array())

select第一个参数是包括的字段，第二个是除外的字段，然后再调用get，就可以只显示固定的字段了。(但是好像_id都会返回)

find_one

@usage : $this->mongo_db->find_one('foo');

find_one($collection = "")

只返回集合中的一个文件

where

@usage : $this->mongo_db->where(array('foo' => 'bar'))->get('foobar');

where($wheres, $value = null)

这个$wheres就是一个 键名 - 键值 和 列名 - 查找值 对应的关系

update

@usage: $this->mongo_db->update('foo', $data = array());

update($collection = "", $options = array())

一般和where和set连用吧。where找到具体记录 set后update更新

参数1：集合名 string

参数2：选项

set

@usage: $this->mongo_db->where(array('blog_id'=>123))->set('posted', 1)->update('blog_posts');

@usage: $this->mongo_db->where(array('blog_id'=>123))->set(array('posted' => 1, 'time' => time()))->update('blog_posts');

set($fields, $value = NULL)

这个set用来设置具体字段的内容的，如usage上的写法，可以先调用where在用set然后显式的update

delete

@usage : $this->mongo_db->delete('foo');

delete($collection = "")

应该也是做最后的一个显式提交，先用where或者其他方式找到某个文件，然后delete下。