读取配置(Reading Configurations)

Phalcon\Config 是一个用于将各种格式的配置文件读取到PHP对象的组件(使用适配器)。

文件适配器(File Adapters)

可用的适配器有:

原生数组(Native Arrays)

下面的例子展示如何将本地数组导入 Phalcon\Config 对象。此选项提供了最好的性能,因为在这个请求中没有读取文件。

<?php

$settings = array(
    "database" => array(
        "adapter"  => "Mysql",
        "host"     => "localhost",
        "username" => "scott",
        "password" => "cheetah",
        "dbname"     => "test_db",
    ),
     "app" => array(
        "controllersDir" => "../app/controllers/",
        "modelsDir"      => "../app/models/",
        "viewsDir"       => "../app/views/",
    ),
    "mysetting" => "the-value"
);

$config = new \Phalcon\Config($settings);

echo $config->app->controllersDir, "\n";
echo $config->database->username, "\n";
echo $config->mysetting, "\n";

如果你想更好的组织你的项目,你可以在另一个文件保存数组,然后读入它。

<?php

require "config/config.php";
$config = new \Phalcon\Config($settings);

读取 INI 文件(Reading INI Files)

INI文件是存储设置的常用方法。Phalcon\Config 采用优化的PHP函数parse_ini_file读取这些文件。为方便访问,文件部分解析成子设置。

[database]
adapter  = Mysql
host     = localhost
username = scott
password = cheetah
dbname     = test_db

[phalcon]
controllersDir = "../app/controllers/"
modelsDir      = "../app/models/"
viewsDir       = "../app/views/"

[models]
metadata.adapter  = "Memory"

你可以阅读如下所示的文件:

<?php

$config = new \Phalcon\Config\Adapter\Ini("path/config.ini");

echo $config->phalcon->controllersDir, "\n";
echo $config->database->username, "\n";
echo $config->models->metadata->adapter, "\n";

合并配置(Merging Configurations)

Phalcon\Config 允许合并配置对象到另一个:

<?php

$config = new \Phalcon\Config(array(
    'database' => array(
        'host' => 'localhost',
        'dbname' => 'test_db'
    ),
    'debug' => 1
));

$config2 = new \Phalcon\Config(array(
    'database' => array(
        'username' => 'scott',
        'password' => 'secret',
    )
));

$config->merge($config2);

print_r($config);

上面的代码会产生以下内容:

Phalcon\Config Object
(
    [database] => Phalcon\Config Object
        (
            [host] => localhost
            [dbname] => test_db
            [username] => scott
            [password] => secret
        )
    [debug] => 1
)

有更多的适配器可用于这个组件: Phalcon Incubator