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Bug #68931 Class with Trait is not contained in get_declared_classes()
Submitted: 2015-01-28 10:57 UTC Modified: 2015-01-28 20:18 UTC
From: bastian dot schneider at commerce-plus dot com Assigned:
Status: Not a bug Package: Class/Object related
PHP Version: 5.6.5 OS: Windows 7 x64
Private report: No CVE-ID: None
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From: bastian dot schneider at commerce-plus dot com
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 [2015-01-28 10:57 UTC] bastian dot schneider at commerce-plus dot com 
Description:
------------
Problem
- "TestClass" is not contained in get_declared_classes()

Circumstances
- the class uses a Trait
- get_declared_classes() is called before the declaration of the class

Test script:
---------------
trait CAS {}

// with use CAS = 135 classes
// without use CAS = 136 classes
var_dump(sizeof(get_declared_classes()));

class TestClass
{
    use CAS;
}

Expected result:
----------------
I would always expect 136 classes 

Actual result:
--------------
135 classes, TestClass is not contained

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 [2015-01-28 16:01 UTC] nikic@php.net
-Status: Open +Status: Not a bug
 [2015-01-28 16:01 UTC] nikic@php.net 
You check get_declared_classes() before the class is defined ... Classes using traits are not early-bound.
 [2015-01-28 16:40 UTC] bastian dot schneider at commerce-plus dot com 
Yes, so it is. But in this case, the behavior is not documented. 

If I check get_declared_classes() before a class with trait, the result is different from a class without trait. If it's a feature and not a bug, it should be documented in http://php.net/manual/en/language.oop5.traits.php or http://php.net/manual/en/function.get-declared-classes.php, don't you think?

Thx and keep up the good work!
 [2015-01-28 20:18 UTC] requinix@php.net 
@bastian: see also my comment on bug #68936, which was coincidentally (?) created minutes before nikic replied here.

It seems to me that it's not that classes using traits are not documented to not be early-bound, which is too many negatives for one sentence I know, but that classes using traits do not benefit from the undocumented early-binding "feature" that typical classes do.
 
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