note 94034 added to language.oop5.abstract

One fairly important difference between php's abstract functions and, say, Java, is that php does not specify the return type in any way - or indeed whether there has to be one. public abstract function square($number); could be implemented by... public function square($number) { return $number*$number; } or public function square($number) { print ($number*$number); } So you need to take care that incompatibilities don't arise due to not returning the right kind of value and this is not enforced in any way. ---- Server IP: 69.147.83.197 Probable Submitter: 213.78.144.116 ---- Manual Page -- http://www.php.net/manual/en/language.oop5.abstract.php Edit -- https://master.php.net/note/edit/94034 Del: integrated -- https://master.php.net/note/delete/94034/integrated Del: useless -- https://master.php.net/note/delete/94034/useless Del: bad code -- https://master.php.net/note/delete/94034/bad+code Del: spam -- https://master.php.net/note/delete/94034/spam Del: non-english -- https://master.php.net/note/delete/94034/non-english Del: in docs -- https://master.php.net/note/delete/94034/in+docs Del: other reasons-- https://master.php.net/note/delete/94034 Reject -- https://master.php.net/note/reject/94034 Search -- https://master.php.net/manage/user-notes.php