Req #72957 [Opn]: Null coalescing operator doesn't behave as expected with SimpleXMLElement
Edit report at https://bugs.php.net/bug.php?id=72957&edit=1
ID: 72957
User updated by: dailywatchdeal at gmail dot com
Reported by: dailywatchdeal at gmail dot com
Summary: Null coalescing operator doesn't behave as expected
with SimpleXMLElement
Status: Open
Type: Feature/Change Request
Package: SimpleXML related
Operating System: Ubuntu
PHP Version: 7.0.10
Block user comment: N
Private report: N
New Comment:
According to the docs, ?? is the same as isset, just a different syntax. Maybe the documentation
should be updated?
Previous Comments:
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[2016-08-28 20:14:55] requinix@php.net
That's because $xml->elem2 exists and isn't null. isset works differently.
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[2016-08-28 18:42:20] dailywatchdeal at gmail dot com
Description:
------------
According to the docs, the ?? operator checks if the 1st operand exists and is not null. In other
words, it's equivalent to isset.
When used to check if a SimpleXMLElement node exists, it doesn't work.
Test script:
---------------
<?php
$xml = new SimpleXMLElement('<root><elem>Text</elem></root>');
echo 'elem2 is: ' . ($xml->elem2 ?? 'backup string');
echo 'elem2 is: ' . (isset($xml->elem2) ? $xml->elem2 : 'backup string');
Expected result:
----------------
elem2 is: backup string
elem2 is: backup string
Actual result:
--------------
elem2 is:
elem2 is: backup string
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Edit this bug report at https://bugs.php.net/bug.php?id=72957&edit=1
Thread (7 messages)