58 lines
3.3 KiB
Markdown
58 lines
3.3 KiB
Markdown
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# 通用配置
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Kohana uses both static properties and files for configuration. Static properties are typically used for static classes, such as [Cookie], [Security], and [Upload]. Files are typically used for objects such as [Database], [Encrypt], and [Session].
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Static properties can be set in `APPPATH/bootstrap.php` or by [class extension](using.autoloading#class-extension). The benefit of static properties is that no additional files need to be loaded. The problem with this method is that it causes the class to be loaded when the property is set, if you do not use an extension. However, using extensions will overload extensions made in modules. It is generally recommended to do static property configuration in the bootstrap.
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[!!] When using opcode caching, such as [APC](http://php.net/apc) or [eAccelerator](http://eaccelerator.net/), class loading time is significantly reduced. It is highly recommended to use opcode caching with *any* production website, no matter the size.
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## 加载配置
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Every new Kohana installation will require changing [Kohana::init] settings in `APPPATH/bootstrap.php`. Any setting that is not set will use the default setting. These settings can be accessed and modified later by using the static property of the [Kohana] class. For instance, to get the current character set, read the [Kohana::$charset] property.
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## 安全配置
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There are several settings which need to be changed to make Kohana secure. The most important of these is [Cookie::$salt], which is used to create a "signature" on cookies that prevents them from being modified outside of Kohana.
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If you plan to use the [Encrypt] class, you will also need to create an `encrypt` configuration file and set the encryption `key` value. The encryption key should include letters, numbers, and symbols for the best security.
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[!!] **Do not use a hash for the encryption key!** Doing so will make the encryption key much easier to crack.
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# 配置文件 {#config-files}
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Configuration files are slightly different from other files within the [cascading filesystem](about.filesystem) in that they are **merged** rather than overloaded. This means that all configuration files with the same file path are combined to produce the final configuration. The end result is that you can overload *individual* settings rather than duplicating an entire file.
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配置文件存放在 `config/` 目录的 PHP 文件，结构类似于：
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<?php defined('SYSPATH') or die('No direct script access.');
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return array(
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'setting' => 'value',
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'options' => array(
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'foo' => 'bar',
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),
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);
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如果上面的配置文件名为 `myconf.php`，你可以通过下面代码调用：
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$config = Kohana::config('myconf');
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$options = $config['options'];
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[Kohana::config] 也提供了一钟使用“逗号格式”访问配置数组中的键：
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获得 "options" 数组：
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$options = Kohana::config('myconf.options');
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从 "options" 数组获得 "foo" 键：
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$foo = Kohana::config('myconf.options.foo');
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配置数组也可以当作对象访问，如果你喜欢下面的方法：
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$options = Kohana::config('myconf')->options;
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请注意的是你只能使用键值型数组访问首个变量，其余的子键都必须使用标准数组方式访：
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$foo = Kohana::config('myconf')->options['foo'];
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