Table of Contents
Zend_Config is designed to simplify access to and use of configuration data within applications. It
provides a nested object property based user interface for accessing such configuration data within application
code. The configuration data may come from a variety of media supporting hierarchical data storage. Currently
Zend_Config provides adapters for configuration data that are stored in text files with
Zend_Config_Ini and
Zend_Config_Xml.
Example 5.1. Using Zend_Config Per Se
Normally it is expected that users would use one of the adapter classes such as
Zend_Config_Ini or
Zend_Config_Xml, but if configuration data are
available in a PHP array, one may simply pass the data to the Zend_Config constructor in order
to utilize a simple object-oriented interface:
<?php
// Given an array of configuration data
$configArray = array(
'webhost' => 'www.example.com',
'database' => array(
'type' => 'pdo_mysql',
'host' => 'db.example.com',
'username' => 'dbuser',
'password' => 'secret',
'name' => 'dbname'
)
);
// Create the object-oriented wrapper upon the configuration data
require_once 'Zend/Config.php';
$config = new Zend_Config($configArray);
// Print a configuration datum (results in 'www.example.com')
echo $config->webhost;
// Use the configuration data to connect to the database
$myApplicationObject->databaseConnect($config->database->type,
$config->database->host,
$config->database->username,
$config->database->password,
$config->database->name);
As illustrated in the example above, Zend_Config provides nested object property syntax to access
configuration data passed to its constructor.