Doc #65870 [Opn->Nab]: Wrong documentation about magic methods __get and __isset

Edit report at https://bugs.php.net/bug.php?id=65870&edit=1 ID: 65870 Updated by: cmb@php.net Reported by: v dot matsuk at tut dot by Summary: Wrong documentation about magic methods __get and __isset -Status: Open +Status: Not a bug Type: Documentation Problem Package: Documentation problem Operating System: Windows 7 x64 PHP Version: 5.4.20 -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: > __get() is called when chaining assignments together like this: > $a = $obj->b = 8. No, see <https://3v4l.org/Gq9PP>. > English version doesn't contain this text. If translations deviate from the original, report that as bug of type translation problem, or consider to submit a patch via <https://edit.php.net/>. Previous Comments: ------------------------------------------------------------------------ [2013-10-09 14:19:26] v dot matsuk at tut dot by Description: ------------ http://www.php.net/manual/en/language.oop5.overloading.php states: >Note: The return value of __set() is ignored because of the way PHP processes the assignment operator. Similarly, __get() is never called when chaining assignments together like this: $a = $obj->b = 8; But it's wrong for __get()! __get() is called when chaining assignments together like this: $a = $obj->b = 8. The Russian version of documentation (http://www.php.net/manual/ru/language.oop5.overloading.php) states: > Замечание: Невозможно использовать перегруженные свойства в других языковых конструкциях, кроме isset(). Это означает, что если на перегруженном свойстве будет вызвана конструкция empty(), то перегруженный метод не будет вызван. Для обхода этого ограничения можно скопировать перегруженное свойство в локальную переменную и затем применить к ней empty(). English version doesn't contain this text. It's also wrong because if method __isset was realised, the empty() will call it if property not found. Test script: --------------- class A { protected $_vars = array(); public function __get($var){return $this->_vars[$var];} public function __set($var, $val){$this->_vars[$var] = $val; } public function __isset($var){return isset($this->_vars[$var]);} } $o = new A(); $o->a = 1; $o->b = 2; $c = $o->b = 3; var_dump($c); //3 var_dump($o->b); //3 var_dump(empty($o->b)); //false Expected result: ---------------- null int (3) true (if i beleive the russian version of documentation) Actual result: -------------- int (3) int (3) false ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=65870&edit=1