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Doc Bug #75359 multiple declaration for visibility or const inline.
Submitted: 2017-10-11 12:13 UTC Modified: 2017-10-11 17:18 UTC
From: saymongcsw at gmail dot com Assigned:
Status: Verified Package: Documentation problem
PHP Version: Irrelevant OS: irrevelant
Private report: No CVE-ID: None
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From: saymongcsw at gmail dot com
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 [2017-10-11 12:13 UTC] saymongcsw at gmail dot com
Description:
------------
I've found cool feature that isn't documented yet so it is as undefined behavior. And works in all PHP since 5.0.2+ and/or earlier.
I.e. missing documentation for multiple declaration visibility and/or constants.

http://php.net/manual/en/language.oop5.visibility.php
http://php.net/manual/en/language.oop5.constants.php

Demo: https://3v4l.org/qRnlk

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

class test1
{
    const a = 'b', b = 'a', c = 'c';

    public function __construct()
    {
        echo self::b, self::a, self::c, PHP_EOL;
    }
}

class test2
{
    private $a = 'b', $b = 'a', $c = 'c';
}

try {
    new test1; // abc
    echo test2::$b, test2::$a, test2::$c; // Cannot access private property test2::$b
} catch (Error $e) {
    echo $e->getMessage();
}


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 [2017-10-11 13:38 UTC] cmb@php.net
-Status: Open +Status: Verified -Type: Feature/Change Request +Type: Bug
 [2017-10-11 13:56 UTC] requinix@php.net
Why is this a bug? ::a and ::$a are two different things. Meanwhile writing "test2::$b" is incorrect both because $b is not static and because it's private, but with Errors only one of those can be reported at a time.
 [2017-10-11 17:18 UTC] cmb@php.net
-Type: Bug +Type: Documentation Problem
 [2017-10-11 17:18 UTC] cmb@php.net
> Why is this a bug?

Of course, it is a doc bug (not a feature request).
 
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