note 102242 added to language.oop5.references

Here's an example I created that helped me understand the difference between passing objects by reference and by value in php 5. <?php class A { public $foo = 'empty'; } class B { public $foo = 'empty'; public $bar = 'hello'; } function normalAssignment($obj) { $obj->foo = 'changed'; $obj = new B; } function referenceAssignment(&$obj) { $obj->foo = 'changed'; $obj = new B; } $a = new A; normalAssignment($a); echo get_class($a), "\n"; echo "foo = {$a->foo}\n"; referenceAssignment($a); echo get_class($a), "\n"; echo "foo = {$a->foo}\n"; echo "bar = {$a->bar}\n"; /* prints: A foo = changed B foo = empty bar = hello */ ?> ---- Server IP: 69.147.83.197 Probable Submitter: 66.11.209.170 ---- Manual Page -- http://www.php.net/manual/en/language.oop5.references.php Edit -- https://master.php.net/note/edit/102242 Del: integrated -- https://master.php.net/note/delete/102242/integrated Del: useless -- https://master.php.net/note/delete/102242/useless Del: bad code -- https://master.php.net/note/delete/102242/bad+code Del: spam -- https://master.php.net/note/delete/102242/spam Del: non-english -- https://master.php.net/note/delete/102242/non-english Del: in docs -- https://master.php.net/note/delete/102242/in+docs Del: other reasons-- https://master.php.net/note/delete/102242 Reject -- https://master.php.net/note/reject/102242 Search -- https://master.php.net/manage/user-notes.php