AggregateConfig

Class AggregateConfig.

Represents an aggregated configuration loader that combines multiple configuration sources. This class MUST be used to merge multiple configurations into a single, unified configuration structure.

It SHALL lazily load and resolve configuration data only when invoked.

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• Full name: \FastForward\Config\AggregateConfig
• This class is marked as final and can't be subclassed
• This class implements: \FastForward\Config\ConfigInterface
• This class is a Final class

Methods

__construct

Constructs a new instance by accepting a variadic list of configuration objects.

public __construct(\FastForward\Config\ConfigInterface $configs): mixed

These configuration objects MUST implement the ConfigInterface.

Parameters:

Parameter	Type	Description
$configs	\FastForward\Config\ConfigInterface	One or more configuration instances to aggregate.

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__invoke

Invokes the configuration aggregator.

public __invoke(): \FastForward\Config\ConfigInterface

This method SHALL initialize a new ArrayConfig instance and populate it with the values from each provided configuration source. It MUST return a fully merged configuration in the form of a ConfigInterface implementation.

Return Value:

the resulting merged configuration object

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Inherited methods

__invoke

Implementing class MUST define the __invoke() method to return a ConfigInterface instance.

public __invoke(): \FastForward\Config\ConfigInterface

• This method is abstract. Return Value:

the actual configuration instance

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get

Retrieves a configuration value by key.

public get(string $key, mixed|null $default = null): mixed

Parameters:

Parameter	Type	Description
$key	string	the configuration key to retrieve
$default	mixed|null	the default value if the key is not found

Return Value:

the value of the configuration key or the default

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has

Checks for existence of a configuration key.

public has(string $key): bool

Parameters:

Parameter	Type	Description
$key	string	the configuration key to check

Return Value:

TRUE if the key exists, FALSE otherwise

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set

Sets configuration data.

public set(array|\FastForward\Config\ConfigInterface|string $key, mixed|null $value = null): void

Parameters:

Parameter	Type	Description
$key	array|\FastForward\Config\ConfigInterface|string	the key or set of keys/values to set
$value	mixed|null	the value to set if a single key is provided

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remove

Removes a configuration key.

public remove(string $key): void

Parameters:

Parameter	Type	Description
$key	string	the configuration key to remove

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toArray

Exports the entire configuration to an array.

public toArray(): array

Return Value:

the configuration as an associative array

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getIterator

Retrieves an iterator for traversing the configuration data.

public getIterator(): \Traversable

Return Value:

an iterator over the configuration

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