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Bug #55447 Global constant declared as const parsed as class constant with token_get_all()
Submitted: 2011-08-18 13:35 UTC Modified: 2011-08-18 14:39 UTC
From: andre at neo-anime dot org Assigned:
Status: Not a bug Package: Scripting Engine problem
PHP Version: 5.3SVN-2011-08-18 (SVN) OS: Linux
Private report: No CVE-ID: None
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 [2011-08-18 13:35 UTC] andre at neo-anime dot org 
Description:
------------
As of PHP 5.3.0 global constants can be declared using the const keyword in 
addition to the define() function. However token_get_all() incorrectly recognizes 
the former as a class constant.

Test script:
---------------
<?php
define('BAR', FALSE);

Expected result:
----------------
T_OPEN_TAG
T_STRING
T_CONSTANT_ENCAPSED_STRING
T_WHITESPACE
T_STRING


Actual result:
--------------
T_OPEN_TAG
T_CONST
T_WHITESPACE
T_STRING
T_WHITESPACE
T_WHITESPACE
T_STRING

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 [2011-08-18 13:54 UTC] andre at neo-anime dot org 
Test script should be

<?php
const BAR = FALSE;
 [2011-08-18 14:39 UTC] johannes@php.net
-Status: Open +Status: Bogus
 [2011-08-18 14:39 UTC] johannes@php.net 
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

The const keyword and the define() function work completely different. The const keyword is handled at compile time whereas define(), for the engine, is a regular function. Different tokens therefore are identifed as different code is generated internally, too.
 
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