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Currency Class

The Currency class is responsible for storing information about a currency. It implements the RequestInterface which means it has a method toArray() that returns an array representation of the currency.

Properties

  • $value : a private property that holds the currency value. Its default value is 'PLN'.

Methods

  • __construct(string $currency): a constructor that takes a string parameter representing the currency value. It sets the currency value if the parameter is not empty or zero. Otherwise, it throws an InvalidArgumentException.
  • createDefault(): self: a static method that returns a new instance of the Currency class with default currency value 'PLN'.
  • toArray(): array: a method that returns an array representation of the currency. The returned array has one key-value pair where the key is 'currency' and the value is the currency value.