Bug #72918 [Com]: String negative offset inside a quoted string leads to parse error

From: Date: Mon, 22 Aug 2016 17:58:59 +0000
Subject: Bug #72918 [Com]: String negative offset inside a quoted string leads to parse error
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-203496@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=72918&edit=1

 ID:                 72918
 Comment by:         git+php at edvin dot io
 Reported by:        dams@php.net
 Summary:            String negative offset inside a quoted string leads
                     to parse error
 Status:             Open
 Type:               Bug
 Package:            *General Issues
 Operating System:   Any
 PHP Version:        7.1.0beta3
 Block user comment: N
 Private report:     N

 New Comment:

echo "{$a[-3]}\n"; // Note { and }

Generates the expected output:
------------------------------
c


Previous Comments:
------------------------------------------------------------------------
[2016-08-22 09:46:07] dams@php.net

Description:
------------
Negative offset in strings works well, except when the variable is inside another string. 

The error works on strings, but also on arrays with negative index in arrays.

The problem also appears in previous versions of PHP, both for array and string. 

Test script:
---------------
<?php

$a = "abcde";
//$a = array( -3 => 2); 
//It works on arrays too. 


echo $a[-3]."\n";
echo "$a[-3]\n";

?>

Expected result:
----------------
c
c

Actual result:
--------------
Parse error: syntax error, unexpected '-', expecting identifier (T_STRING) or variable
(T_VARIABLE) or number (T_NUM_STRING) in test.php on line 6



------------------------------------------------------------------------



--
Edit this bug report at https://bugs.php.net/bug.php?id=72918&edit=1

Thread (3 messages)

« previous php.bugs (#203496) next »