config.php

<?php

namespace YourVendor\Project;

class Config {
	private static array $config = [];

	private function __construct() {
		// Private constructor to prevent direct instantiation
	}

	private function __clone() {
		// Prevent cloning of the instance
	}

	public static function set( string $key, string $value ): void {
		self::$config[ $key ] = $value;
	}

	public static function get( string $key ): ?string {
		return self::$config[ $key ] ?? null;
	}

	public static function has( string $key ): bool {
		return isset( self::$config[ $key ] );
	}

	public static function delete( string $key ): void {
		unset( self::$config[ $key ] );
	}
}