>>> This prototype is stating that a function called Copyright3_6_56() will be declared later on somewhere else in the code.
PHP has no function prototypes that "state that a function will be declared later". This thing just doesn't exist in PHP, unlike C. Copyright3_6_56() would be just a function call (with missing ;, so likely would cause a syntax error unless ; is found later).
>>> This prototype is stating that a function called Copyright3_6_56() will be declared later on somewhere else in the code.
PHP has no function prototypes that "state that a function will be declared later". This thing just doesn't exist in PHP, unlike C. Copyright3_6_56() would be just a function call (with missing ;, so likely would cause a syntax error unless ; is found later).