Bug #76707 [Opn->Nab]: PHP Parse error: syntax error, unexpected '&'
| From: | requinix@php.net | Date: | Sun, 05 Aug 2018 00:30:43 +0000 |
| Subject: | Bug #76707 [Opn->Nab]: PHP Parse error: syntax error, unexpected '&' | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-216588@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=76707&edit=1
ID: 76707
Updated by: requinix@php.net
Reported by: ASchmidt at Anamera dot net
Summary: PHP Parse error: syntax error, unexpected '&'
-Status: Open
+Status: Not a bug
Type: Bug
Package: Variables related
Operating System: Win64
PHP Version: 7.2.8
Block user comment: N
Private report: N
New Comment:
& is not an operator. It is a symbol used to modify certain actions, like with assignment means
to assign by reference, or in a function parameter list means that an argument is passed by
reference.
The ternary is an expression, and like other expressions you cannot use references with them.
Previous Comments:
------------------------------------------------------------------------
[2018-08-05 00:24:45] ASchmidt at Anamera dot net
Description:
------------
One can use an if/then/else construct to conditionally assign a reference to a variable. However,
the more compact/readable assignment by means a ternary operator, rejects the "&"
before the variable.
Test script:
---------------
<?php
declare(strict_types=1);
$myArray = array( [ 'pear', 'sweet' ], [ 'orange', 'sour' ]
);
if ( isset( $myArray [5] ) )
$entryRef = &$myArray [5];
else
$entryRef = &$myArray [1];
echo $entryRef[1]; // works
// Syntax error:
$entryRef = isset( $myArray [5] ) ? &$myArray[5] : &$myArray[1];
Expected result:
----------------
$entryRef = &$variable;
is a valid assignment - so it seems counterintuitive for the similar assignment
$entryRef = condition ? &$variable1 : NULL;
to be "invalid syntax".
Actual result:
--------------
PHP Parse error: syntax error, unexpected '&'
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=76707&edit=1