例 3.2. Configuration Data Stored in PHP Arrays

This example illustrates a basic use of Zend_Config_Array for loading configuration data from PHP arrays. First, we need to create PHP arrays having the configuration data:

<?php
// Production site configuration data
$config['production'] = array(
    'webhost' => 'www.example.com',
    'database' => array(
        'type'     => 'pdo_mysql',
        'host'     => 'db.example.com',
        'username' => 'dbuser',
        'password' => 'secret',
        'name'     => 'dbname'
    )
);

// Staging site configuration data inherits from production and
// overrides values as necessary
$config['staging'] = $config['production'];
$config['staging']['webhost'] = 'dev.example.com';
$config['staging']['database']['host'] = 'dev.example.com';
$config['staging']['database']['username'] = 'devuser';
$config['staging']['database']['password'] = 'devsecret';
?>           

	注意
	The configuration data array must be named $config in the loaded PHP script.

Inheritance is supported in the example above with an assignment of production section values to the staging section. Now it is a simple matter to load the configuration data with Zend_Config_Array:

<?php
require_once 'Zend/Config.php';
require_once 'Zend/Config/Array.php';

$config = new Zend_Config(Zend_Config_Array::load('/path/to/config.php', 'staging'));

echo $config->database->host; // prints "dev.example.com"
?>