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From: Arno Welzel <usenet@arnowelzel.de>
Newsgroups: comp.lang.php
Subject: Re: ArrayObject vs array
Date: Mon, 26 Jul 2021 12:16:44 +0200
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alex:

> Il 25/07/21 11:48, J.O. Aho ha scritto:
>>
>> You can make objects to have links to other objects (reference),
> 
> That is?

<?php
$a = new Object();

// $b is a new reference ("link") to the object in $a and not(!) a copy

$b = $a;

// Now we change something in the object

$b->setName('foobar');

// This will return the same name wich was just set using $b since
// $b is just another reference to the object originally assinged to $a

$a->getName();
?>

If you need a copy of an object, you need to use the "clone" keyword:

<?php
$a = new Object();

// This will create a copy of the object in $b
$b = clone $a;
?>



-- 
Arno Welzel
https://arnowelzel.de