<?php
$config = new Yaf_Config_Simple(['env' => 'development']);
// Writable by default
$config['env'] = 'production';
$config['cache'] = ['enable' => true];
echo $config['env'], "\n";
var_dump($config['cache']['enable']);
// Assignments to a read-only configuration fail silently
$frozen = new Yaf_Config_Simple(['env' => 'development'], true);
$frozen['env'] = 'production';
echo $frozen['env'], "\n";
?>
The above example will output
something similar to:
production
bool(true)
development