note 124366 added to language.oop5.visibility

Re: wbcarts at juno dot com Expected, since it comes down to PHP's lack of type enforcement. Classes preserve structure, but doesn't natively enforce scalar property types, as per PHP's variables. 'It REQUIRES OUTSIDE CODE to do all the work...' No, as you indicate, to mitigate this, make variables private and use protected/public 'set' and 'get' types of methods to manipulate their values. However, the 'set' functions would also need to enforce type and report errors if not of the correct type. Of course, the code that uses classes should be designed to either: a. Provide only the correct types of values. b. Handle the errors reported. c. Encapsulate use of the class with try-catch blocks. Note that c. is what sloppy code feeding mistyped values to the class would have to do if type were strictly enforced. Fortunately, as of 7.0, type can be specified for scalar function/method parameters, but would need try-catch blocks to handle mismatches from inside the class, rather than using the 'is' functions. All of this is part of proper design and defensive programming. ---- Server IP: 208.43.231.9 Probable Submitter: 82.199.157.54 (proxied: 202.7.222.4) ---- Manual Page -- http://php.net/manual/en/language.oop5.visibility.php Edit -- https://master.php.net/note/edit/124366 Del: integrated -- https://master.php.net/note/delete/124366/integrated Del: useless -- https://master.php.net/note/delete/124366/useless Del: bad code -- https://master.php.net/note/delete/124366/bad+code Del: spam -- https://master.php.net/note/delete/124366/spam Del: non-english -- https://master.php.net/note/delete/124366/non-english Del: in docs -- https://master.php.net/note/delete/124366/in+docs Del: other reasons-- https://master.php.net/note/delete/124366 Reject -- https://master.php.net/note/reject/124366 Search -- https://master.php.net/manage/user-notes.php