ConfigHelper

Class ConfigHelper.

Provides a set of static helper methods for manipulating configuration arrays, particularly handling associative arrays with dot notation and nested structures. This class SHALL NOT be instantiated and MUST be used statically.

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

Methods

isAssoc

Determines if the provided value is an associative array.

public static isAssoc(mixed $value): bool

This method SHALL check whether the given array uses string keys, distinguishing it from indexed arrays.

• This method is static. Parameters:

Parameter	Type	Description
$value	mixed	the value to check

Return Value:

true if the array is associative; false otherwise

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normalize

Normalizes a configuration array using dot notation delimiters.

public static normalize(array $config): array

This method SHALL recursively convert keys containing delimiters into nested arrays. For example, a key like "database.host" SHALL be transformed into ['database' => ['host' => 'value']].

• This method is static. Parameters:

Parameter	Type	Description
$config	array	the configuration array to normalize

Return Value:

the normalized configuration array

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flatten

Flattens a nested configuration array into a dot-notated traversable set.

public static flatten(array $config, string $rootKey = ''): \Traversable<string,mixed>

This method SHALL recursively iterate through the nested array structure and convert it into a flat representation where keys reflect the nested path. A value like ['database' => ['host' => 'localhost']] SHALL be transformed into ['database.host' => 'localhost'].

• This method is static. Parameters:

Parameter	Type	Description
$config	array	the configuration array to flatten
$rootKey	string	(Optional) The root key prefix for recursive calls

Return Value:

a traversable list of flattened key-value pairs

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