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
*/
?>
----
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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
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