Bug #78568 [Opn->Nab]: Incorrect evaluation of ?? and ? containing expression
| From: | requinix@php.net | Date: | Thu, 19 Sep 2019 16:34:52 +0000 |
| Subject: | Bug #78568 [Opn->Nab]: Incorrect evaluation of ?? and ? containing expression | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-222831@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=78568&edit=1
ID: 78568
Updated by: requinix@php.net
Reported by: carlos at wfmh dot org dot pl
Summary: Incorrect evaluation of ?? and ? containing
expression
-Status: Open
+Status: Not a bug
Type: Bug
Package: *General Issues
Operating System: Linux
PHP Version: 7.3.9
Block user comment: N
Private report: N
New Comment:
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to
report
a bug at http://bugs.php.net/how-to-report.php
https://www.php.net/manual/en/language.operators.precedence.php
?? has higher precedence than ?:
Previous Comments:
------------------------------------------------------------------------
[2019-09-19 16:30:36] carlos at wfmh dot org dot pl
Description:
------------
Incorrect evaluation of ?? and ? containing expression.
This code produces incorrect results:
<?php
$result = 20;
$success = false;
$result = $result ?? $success ? "TRUE" : "FALSE";
var_dump($result);
would output "TRUE" instead of expected 20.
Workaround is to put ternary into brackets:
<?php
$result = 20;
$success = false;
$result = $result ?? ($success ? "TRUE" : "FALSE");
var_dump($result);
and then the result is as expected 20.
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=78568&edit=1