note 112536 added to language.oop5.interfaces

By asking your colleague to implement your interface, you are asking him to guarantee that he has implemented all the methods you need. He can implement multiple interfaces, each being a contract, so that the guy cleaning up the cruft down the road can see which methods belong to which area of concern; but since interfaces are primarily contracts rather than documentation, a class cannot implement two interfaces containing the same method since that would make the contract lose credibility through ambiguity. Thus a class can implement two interfaces with overlapping concerns only by factoring their common methods into a third interface that serves as a base for the first two, which resolves the contractual ambiguity. ---- Server IP: 69.147.83.199 Probable Submitter: 74.73.47.242 ---- Manual Page -- http://php.net/manual/en/language.oop5.interfaces.php Edit -- https://master.php.net/note/edit/112536 Del: integrated -- https://master.php.net/note/delete/112536/integrated Del: useless -- https://master.php.net/note/delete/112536/useless Del: bad code -- https://master.php.net/note/delete/112536/bad+code Del: spam -- https://master.php.net/note/delete/112536/spam Del: non-english -- https://master.php.net/note/delete/112536/non-english Del: in docs -- https://master.php.net/note/delete/112536/in+docs Del: other reasons-- https://master.php.net/note/delete/112536 Reject -- https://master.php.net/note/reject/112536 Search -- https://master.php.net/manage/user-notes.php