Class based type hinting has already been available since 2004 with 5.0 [1] This release adds support for the general standard object type. [1] http://php.net/

Class based type hinting has already been available since 2004 with 5.0 [1] This release adds support for the general standard object type. [1] http://php.net/manual/en/functions.arguments.php#functions.arguments.type-declaration http://php.net/manual/en/functions.arguments.php#functions.a...