<?php final class Config extends ArrayObject { } final class MyClass { public function __construct(Config $config) { // Read settings echo $config['key'] . "\n"; echo $config->offsetGet('key') . "\n"; // Reading a sub-key echo $config['db']['hostname'] . "\n"; echo $config->offsetGet('db')['hostname'] . "\n"; } } // Within the DI container definition // Load settings from settings.php $settings = [ 'key' => 'value', 'db' => [ 'hostname' => '127.0.0.1', ] ]; $config = new Config($settings); // Let the DI container inject this object via autowiring new MyClass($config);
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