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Bug #76257 NULL can be used as an array without warning
Submitted: 2018-04-23 21:01 UTC Modified: 2021-11-03 14:42 UTC
From: smileytechguy at smileytechguy dot com Assigned: cmb (profile)
Status: Duplicate Package: Arrays related
PHP Version: 7.2.4 OS: Windows 10
Private report: No CVE-ID: None
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Further comment on this bug is unnecessary.

 

 [2018-04-23 21:01 UTC] smileytechguy at smileytechguy dot com 
Description:
------------
The special constant NULL or any value which is null can be used as an array without error, warning, or notice.

PHP version:

PHP 7.2.4 (cli) (built: Mar 28 2018 04:27:01) ( ZTS MSVC15 (Visual C++ 2017) x64 )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies


Test script:
---------------
$foo = NULL;
var_dump($foo[0]); // will output NULL
var_dump($foo["bar"]); // will also output NULL

Expected result:
----------------
Throw at least a warning, showing that NULL was used in an invalid way.

Actual result:
--------------
NULL is returned

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 [2018-04-23 21:22 UTC] cmb@php.net
-Status: Open +Status: Duplicate -Assigned To: +Assigned To: cmb
 [2018-04-23 21:22 UTC] cmb@php.net 
This is basically a duplicate of request #37676.  Note that there
is a respective RFC[1] which already has been accepted, but not
implemented yet.

[1] <https://wiki.php.net/rfc/notice-for-non-valid-array-container>
 [2021-11-03 14:36 UTC] nikic@php.net
-Summary: NULL can be used as an array without essay +Summary: NULL can be used as an array without warning
 [2021-11-03 14:42 UTC] cmb@php.net
-Block user comment: No +Block user comment: Yes
 
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