note 93939 added to language.oop5.overloading

Combining two things noted previously: 1 - Unsetting an object member removes it from the object completely, subsequent uses of that member will be handled by magic methods. 2 - PHP will not recursively call one magic method from within itself (at least for the same $name). This means that if an object member has been unset(), it IS possible to re-declare that object member (as public) by creating it within your object's __set() method, like this: <?php class Foo { function __set($name, $value) { // Add a new (public) member to this object. // This works because __set() will not recursively call itself. $this->$name= $value; } } $foo = new Foo(); // $foo has zero members at this point var_dump($foo); // __set() will be called here $foo->bar = 'something'; // Calls __set() // $foo now contains one member var_dump($foo); // Won't call __set() because 'bar' is now declared $foo->bar = 'other thing'; ?> Also be mindful that if you want to break a reference involving an object member without triggering magic functionality, DO NOT unset() the object member directly. Instead use =& to bind the object member to any convenient null variable. ---- Server IP: 64.71.164.2 Probable Submitter: 67.237.228.46 ---- Manual Page -- http://www.php.net/manual/en/language.oop5.overloading.php Edit -- https://master.php.net/note/edit/93939 Del: integrated -- https://master.php.net/note/delete/93939/integrated Del: useless -- https://master.php.net/note/delete/93939/useless Del: bad code -- https://master.php.net/note/delete/93939/bad+code Del: spam -- https://master.php.net/note/delete/93939/spam Del: non-english -- https://master.php.net/note/delete/93939/non-english Del: in docs -- https://master.php.net/note/delete/93939/in+docs Del: other reasons-- https://master.php.net/note/delete/93939 Reject -- https://master.php.net/note/reject/93939 Search -- https://master.php.net/manage/user-notes.php