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Yaf_Config_Simple::__get() is a magic method in the Yaf PHP framework that allows you to access configuration values dynamically.

When you access a property that doesn't exist in the Yaf_Config_Simple object using the -> operator, the __get() method is automatically called.

For example, let's say you have a Yaf_Config_Simple object called $config:

php
$config = new Yaf_Config_Simple(array(
'database' => array(
'host' => 'localhost',
'port' => 3306,
'username' => 'root',
'password' => 'password',
),
));


To access a configuration value, you can use the following syntax:

php
$host = $config->database->host;


In this example, $config->database will return another Yaf_Config_Simple object representing the "database" section of the configuration, and $config->database->host will return the value "localhost".

If you try to access a property that doesn't exist in the configuration, the __get() method will return null.

Note that Yaf_Config_Simple also supports array-style access using square brackets. For example:

php
$host = $config['database']['host'];


This will have the same result as the previous example.

I hope this explanation clarifies how to use Yaf_Config_Simple::__get() method and provides you with the corresponding example. Let me know if you have any further questions!