arrayNode example

$rootNode = $treeBuilder->getRootNode();
        $rootNode
            ->children()
                ->booleanNode('enabled')->end()
                ->booleanNode('indexing_enabled')->end()
                ->integerNode('indexing_batch_size')->defaultValue(100)->end()
                ->scalarNode('hosts')->end()
                ->scalarNode('index_prefix')->end()
                ->scalarNode('throw_exception')->end()
                ->scalarNode('logger_level')->defaultValue($debug ? Level::Debug : Level::Error)->end()
                ->arrayNode('ssl')
                    ->children()
                        ->scalarNode('cert_path')->end()
                        ->scalarNode('cert_password')->end()
                        ->scalarNode('cert_key_path')->end()
                        ->scalarNode('cert_key_password')->end()
                        ->booleanNode('verify_server_cert')->defaultValue(true)->end()
                    ->end()
                ->end()
                ->arrayNode('index_settings')->variablePrototype()->end()->end()
                ->arrayNode('analysis')->performNoDeepMerging()->variablePrototype()->end()->end()
                ->arrayNode('language_analyzer_mapping')->defaultValue([])->scalarPrototype()->end()->end()
                

    public function addConfiguration(NodeDefinition $node)
    {
        $node
            ->fixXmlConfig('extra_field')
            ->fixXmlConfig('default_role')
            ->children()
                ->scalarNode('service')->isRequired()->cannotBeEmpty()->defaultValue('ldap')->end()
                ->scalarNode('base_dn')->isRequired()->cannotBeEmpty()->end()
                ->scalarNode('search_dn')->defaultNull()->end()
                ->scalarNode('search_password')->defaultNull()->end()
                ->arrayNode('extra_fields')
                    ->prototype('scalar')->end()
                ->end()
                ->arrayNode('default_roles')
                    ->beforeNormalization()->ifString()->then(fn ($v) => preg_split('/\s*,\s*/', $v))->end()
                    ->requiresAtLeastOneElement()
                    ->prototype('scalar')->end()
                ->end()
                ->scalarNode('uid_key')->defaultValue('sAMAccountName')->end()
                ->scalarNode('filter')->defaultValue('({uid_key}={username})')->end()
                ->scalarNode('password_attribute')->defaultNull()->end()
            ->end()
        ;

class Placeholders implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $tb = new TreeBuilder('placeholders');
        $rootNode = $tb->getRootNode();
        $rootNode
            ->children()
                ->booleanNode('enabled')->defaultFalse()->end()
                ->floatNode('favorite_float')->end()
                ->arrayNode('good_integers')
                    ->integerPrototype()->end()
                ->end()
            ->end()
        ;

        return $tb;
    }
}

->replaceArgument(2, $config['claim']);
    }

    public function getKey(): string
    {
        return 'oidc_user_info';
    }

    public function addConfiguration(NodeBuilder $node): void
    {
        $node
            ->arrayNode($this->getKey())
                ->fixXmlConfig($this->getKey())
                ->beforeNormalization()
                    ->ifString()
                    ->then(fn ($v) => ['claim' => 'sub', 'base_uri' => $v])
                ->end()
                ->children()
                    ->scalarNode('base_uri')
                        ->info('Base URI of the userinfo endpoint on the OIDC server.')
                        ->isRequired()
                        ->cannotBeEmpty()
                    ->end()
                    

        ], $tree->merge($a, $b));
    }

    public function testPrototypeWithoutAKeyAttribute()
    {
        $tb = new TreeBuilder('root', 'array');

        $tree = $tb
            ->getRootNode()
                ->children()
                    ->arrayNode('append_elements')
                        ->prototype('scalar')->end()
                    ->end()
                ->end()
            ->end()
            ->buildTree()
        ;

        $a = [
            'append_elements' => ['a', 'b'],
        ];

        

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

class ArrayExtraKeys implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $tb = new TreeBuilder('array_extra_keys');
        $rootNode = $tb->getRootNode();
        $rootNode
            ->children()
                ->arrayNode('foo')
                    ->ignoreExtraKeys(false)
                    ->children()
                        ->scalarNode('baz')->end()
                        ->scalarNode('qux')->end()
                    ->end()
                ->end()
                ->arrayNode('bar')
                    ->prototype('array')
                        ->ignoreExtraKeys(false)
                        ->children()
                            ->scalarNode('corge')->end()
                            

->cannotBeEmpty()
            ->integerPrototype();

        $node->getNode()->finalize([]);
    }

    public function testSetDeprecated()
    {
        $node = new ArrayNodeDefinition('root');
        $node
            ->children()
                ->arrayNode('foo')->setDeprecated('vendor/package', '1.1', 'The "%path%" node is deprecated.')->end()
            ->end()
        ;
        $deprecatedNode = $node->getNode()->getChildren()['foo'];

        $this->assertTrue($deprecatedNode->isDeprecated());
        $deprecation = $deprecatedNode->getDeprecation($deprecatedNode->getName(), $deprecatedNode->getPath());
        $this->assertSame('The "root.foo" node is deprecated.', $deprecation['message']);
        $this->assertSame('vendor/package', $deprecation['package']);
        $this->assertSame('1.1', $deprecation['version']);
    }

    

$this->defaultFailureHandlerOptions = [];
        $this->defaultSuccessHandlerOptions = [];
    }

    public function addConfiguration(NodeDefinition $node): void
    {
        parent::addConfiguration($node);

        $builder = $node->children();
        $builder
            ->scalarNode('realm')->defaultNull()->end()
            ->arrayNode('token_extractors')
                ->fixXmlConfig('token_extractors')
                ->beforeNormalization()
                    ->ifString()
                    ->then(fn ($v) => [$v])
                ->end()
                ->cannotBeEmpty()
                ->defaultValue([
                    'security.access_token_extractor.header',
                ])
                ->scalarPrototype()->end()
            ->end()
        ;

class TreeBuilderTest extends TestCase
{
    public function testUsingACustomNodeBuilder()
    {
        $builder = new TreeBuilder('custom', 'array', new CustomNodeBuilder());

        $nodeBuilder = $builder->getRootNode()->children();

        $this->assertInstanceOf(CustomNodeBuilder::class, $nodeBuilder);

        $nodeBuilder = $nodeBuilder->arrayNode('deeper')->children();

        $this->assertInstanceOf(CustomNodeBuilder::class, $nodeBuilder);
    }

    public function testOverrideABuiltInNodeType()
    {
        $builder = new TreeBuilder('override', 'array', new CustomNodeBuilder());

        $definition = $builder->getRootNode()->children()->variableNode('variable');

        $this->assertInstanceOf(VariableNodeDefinition::class, $definition);
    }

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

class AddToList implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $tb = new TreeBuilder('add_to_list');
        $rootNode = $tb->getRootNode();
        $rootNode
            ->children()
                ->arrayNode('translator')
                    ->fixXmlConfig('fallback')
                    ->fixXmlConfig('source')
                    ->children()
                        ->arrayNode('fallbacks')
                            ->prototype('scalar')->end()
                            ->defaultValue([])
                        ->end()
                        ->arrayNode('sources')
                            ->useAttributeAsKey('source_class')
                            ->prototype('scalar')->end()
                        ->end()
                        

return 'memory';
    }

    /** * @return void */
    public function addConfiguration(NodeDefinition $node)
    {
        $node
            ->fixXmlConfig('user')
            ->children()
                ->arrayNode('users')
                    ->useAttributeAsKey('identifier')
                    ->normalizeKeys(false)
                    ->prototype('array')
                        ->children()
                            ->scalarNode('password')->defaultNull()->end()
                            ->arrayNode('roles')
                                ->beforeNormalization()->ifString()->then(fn ($v) => preg_split('/\s*,\s*/', $v))->end()
                                ->prototype('scalar')->end()
                            ->end()
                        ->end()
                    ->end()
                

$rootNode
            ->children()
                ->scalarNode('access_denied_url')->defaultNull()->example('/foo/error403')->end()
                ->enumNode('session_fixation_strategy')
                    ->values([SessionAuthenticationStrategy::NONE, SessionAuthenticationStrategy::MIGRATE, SessionAuthenticationStrategy::INVALIDATE])
                    ->defaultValue(SessionAuthenticationStrategy::MIGRATE)
                ->end()
                ->booleanNode('hide_user_not_found')->defaultTrue()->end()
                ->booleanNode('erase_credentials')->defaultTrue()->end()
                ->booleanNode('enable_authenticator_manager')->setDeprecated('symfony/security-bundle', '6.2', 'The "%node%" option at "%path%" is deprecated.')->defaultTrue()->end()
                ->arrayNode('access_decision_manager')
                    ->addDefaultsIfNotSet()
                    ->children()
                        ->enumNode('strategy')
                            ->values($this->getAccessDecisionStrategies())
                        ->end()
                        ->scalarNode('service')->end()
                        ->scalarNode('strategy_service')->end()
                        ->booleanNode('allow_if_all_abstain')->defaultFalse()->end()
                        ->booleanNode('allow_if_equal_granted_denied')->defaultTrue()->end()
                    ->end()
                    ->validate()
                        

#[Package('storefront')] class Configuration implements ConfigurationInterface
{
    public function getConfigTreeBuilder(): TreeBuilder
    {
        $treeBuilder = new TreeBuilder('storefront');

        $rootNode = $treeBuilder->getRootNode();

        $rootNode
            ->children()
                ->arrayNode('reverse_proxy')
                    ->children()
                        ->booleanNode('enabled')->end()
                        ->booleanNode('use_varnish_xkey')->defaultFalse()->end()
                        ->arrayNode('hosts')->performNoDeepMerging()->scalarPrototype()->end()->end()
                        ->integerNode('max_parallel_invalidations')->defaultValue(2)->end()
                        ->scalarNode('redis_url')->end()
                        ->scalarNode('ban_method')->defaultValue('BAN')->end()
                        ->arrayNode('ban_headers')->performNoDeepMerging()->defaultValue([])->scalarPrototype()->end()->end()
                        ->arrayNode('purge_all')
                            ->children()
                                ->scalarNode('ban_method')->defaultValue('BAN')->end()
                                

$this->addTwigFormatOptions($rootNode);
        $this->addMailerSection($rootNode);

        return $treeBuilder;
    }

    private function addFormThemesSection(ArrayNodeDefinition $rootNode): void
    {
        $rootNode
            ->fixXmlConfig('form_theme')
            ->children()
                ->arrayNode('form_themes')
                    ->addDefaultChildrenIfNoneSet()
                    ->prototype('scalar')->defaultValue('form_div_layout.html.twig')->end()
                    ->example(['@My/form.html.twig'])
                    ->validate()
                        ->ifTrue(fn ($v) => !\in_array('form_div_layout.html.twig', $v))
                        ->then(fn ($v) => array_merge(['form_div_layout.html.twig'], $v))
                    ->end()
                ->end()
            ->end()
        ;
    }

    

->append($this->createStockSection())
            ->end();

        return $treeBuilder;
    }

    private function createFilesystemSection(): ArrayNodeDefinition
    {
        $rootNode = (new TreeBuilder('filesystem'))->getRootNode();
        $rootNode
            ->children()
                ->arrayNode('private')
                    ->children()
                        ->scalarNode('type')->end()
                        ->scalarNode('visibility')->end()
                        ->variableNode('config')->end()
                    ->end()
                ->end()
                ->arrayNode('public')
                    ->performNoDeepMerging()
                    ->children()
                        ->scalarNode('type')->end()
                        ->scalarNode('url')->end()