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Request #28156 E_WARN instead E_ERROR when doing $a = 'asdf'; echo is_array($a['foo']['asdf']
Submitted: 2004-04-26 15:18 UTC Modified: 2012-03-23 17:01 UTC
Votes:2
Avg. Score:3.0 ± 0.0
Reproduced:0 of 0 (0.0%)
From: info at gramba dot tv Assigned: helly (profile)
Status: Closed Package: *General Issues
PHP Version: 5.0.0.0 OS: *
Private report: No CVE-ID: None
View Developer Edit
 [2004-04-26 15:18 UTC] info at gramba dot tv 
Description:
------------
$a = 'asdf';
echo is_array($a['foo']['asdf']);

is completly invalid, unfortunatly many applications deal with the fact that some offsets simply "may" not exist.

workaround would be

if (isset($a['foo']['asdf']) &&
    is_array($a['foo']['asdf']) {

....

but this would bloat the code a lot

Reproduce code:
---------------
// /* E_ERROR Invalid offset */

$a = 'asdf';
echo is_array($a['foo']['asdf']);



Expected result:
----------------
an E_WARNING instead of E_ERROR which is suppressable

Actual result:
--------------
E_ERROR

Patches

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 [2004-04-26 20:37 UTC] helly@php.net 
We are considering a new operator or internal function to take care of this after PHP 5.0. A patch is here:

http://marcus-boerger.de/php/ext/ze2/ze2-ifsetor-20040416-4.diff.txt

Syntax: ifsetor( <var> [, <exp> ])

Semantic: check whether variable <var> exists and return it. If it not exists evaluate expression <exp> which defaults to NULL and return that value instead.

Comment: <var> may also be an array subscription of any depth.
 [2007-09-25 11:24 UTC] ofih at fhd dot ko 
http://www.meta-fx.com 
forex
 [2012-03-23 17:01 UTC] nikic@php.net 
In PHP 5.4 this will output:

Warning: Illegal string offset 'foo' in /home/nikic/dev/test.php on line 4

Warning: Illegal string offset 'asdf' in /home/nikic/dev/test.php on line 4

Thus closing.
 [2012-03-23 17:01 UTC] nikic@php.net
-Status: Suspended +Status: Closed -Package: Feature/Change Request +Package: *General Issues
 
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