php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Request #10527 Declare constant variables
Submitted: 2001-04-27 12:37 UTC Modified: 2015-02-17 08:38 UTC
Votes:4
Avg. Score:3.0 ± 1.4
Reproduced:1 of 1 (100.0%)
Same Version:0 (0.0%)
Same OS:0 (0.0%)
From: jnutzman at yahoo dot com Assigned:
Status: Wont fix Package: Scripting Engine problem
PHP Version: * OS: *
Private report: No CVE-ID: None
View Developer Edit
 [2001-04-27 12:37 UTC] jnutzman at yahoo dot com 
PHP 4 doesn't seem to have the capability to define variables of all types as being constants. An example of this could be:

$stuff = (const)array('1','2');
or
$stuff = const($stuff);

An error would be generated if the script later tried to:
$stuff = array('3','2');

This is *not* the same as CONSTANTS like TRUE and FALSE.

This would be extremely useful with sessions, so other programmers don't clobber important session variables that shouldn't change.

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2010-12-17 12:42 UTC] jani@php.net
-Summary: Declare variables as constants +Summary: Declare constant variables -Package: Feature/Change Request +Package: Scripting Engine problem -Operating System: Linux +Operating System: * -PHP Version: 4.0.4pl1 +PHP Version: *
 [2015-02-17 08:38 UTC] krakjoe@php.net
-Status: Open +Status: Wont fix
 [2015-02-17 08:38 UTC] krakjoe@php.net 
I don't think a constant variable makes sense in principle.

We don't have the concept of a symbol in user land PHP.

In C (or others), where everything is a symbol, functions, classes, named variables, it makes sense for a symbol to be constant.

In PHP, we don't have symbols, we have constants, variables, classes, and functions, they are distinct and non-overlapping.

To change this would be a significant and complicated change, of the kind that requires and RFC.

I'm therefore going to mark this bug as won't fix, it can still be found if some future RFC requires it for reference.

Sorry about the wait :)
 
PHP Copyright © 2001-2025 The PHP Group
All rights reserved. 		Last updated: Mon Mar 31 03:01:29 2025 UTC