... Accepting Arguments . ... To access arguments, it's necessary for each argument to have a clearly defined type. ... Boolean values remain untouched. ... All other types result in an object with the property scalar , having the corresponding source value as content. convert_to_null_ex(value) . ... If the supplied type doesn't match the required type, PHP forces dummy contents on the resulting value (empty strings, arrays, or objects, 0 for numeric values, FALSE for Booleans) to ensure a defined state...