note 123495 added to language.oop5.references

I think this example should clarify the difference between PHP references (aliases) and pointers: <?php class A { public $var = 42; } $a = new A; // $a points to the object with id=1 echo 'A: ' . $a->var . PHP_EOL; // A: 42 $b = $a; // $b points to the object with id=1 echo 'B: ' . $b->var . PHP_EOL; // B: 42 $b->var = 5; echo 'B: ' . $b->var . PHP_EOL; // B: 5 echo 'A: ' . $a->var . PHP_EOL; // A: 5 $b = new A; // now $b points to the object with id=2, but $a still points to the 1st object echo 'B: ' . $b->var . PHP_EOL; // B: 42 echo 'A: ' . $a->var . PHP_EOL; // A: 5 ?> ---- Server IP: 208.43.231.9 Probable Submitter: 2a02:cb43:e::301 (proxied: 37.252.81.241) ---- Manual Page -- http://php.net/manual/en/language.oop5.references.php Edit -- https://master.php.net/note/edit/123495 Del: integrated -- https://master.php.net/note/delete/123495/integrated Del: useless -- https://master.php.net/note/delete/123495/useless Del: bad code -- https://master.php.net/note/delete/123495/bad+code Del: spam -- https://master.php.net/note/delete/123495/spam Del: non-english -- https://master.php.net/note/delete/123495/non-english Del: in docs -- https://master.php.net/note/delete/123495/in+docs Del: other reasons-- https://master.php.net/note/delete/123495 Reject -- https://master.php.net/note/reject/123495 Search -- https://master.php.net/manage/user-notes.php