Bug #70135 [NEW]: class alias conflict with class defined in another file with the same namespace
From: php at lvht dot net
Operating system: linux & mac os x
PHP version: 5.6.11
Package: Scripting Engine problem
Bug Type: Bug
Bug description:class alias conflict with class defined in another file with the same namespace
Description:
------------
In one file with a namespace(eg, Lv), we define a class named Foo.
In another with a subnamespace(eg, Lv\Common), we define another class
with the *same* name Foo.
In the third file with the same namespace(Lv), we first "import"
Lv\Common\Foo using "use Lv\Common\Foo" and then define a class named
Bar that extends Foo(the Lv\Common\Foo).
In a test file, we first make an instance of Lv\Foo, and then try to
make an instance of Lv\Bar, which will failed with a fatal error.
Test script:
---------------
We need four files in the same directory.
1. In Foo.php,
<?php namespace Lv;
class Foo{}
2. In CommonFoo.php,
<?php namespace Lv\Common;
class Foo{}
3. In Bar.php,
<?php namespace Lv;
require 'CommonFoo.php';
use Lv\Common\Foo;
class Bar extends Foo {}
4. Finally, in app.php,
<?php
require 'Foo.php';
$foo = new Lv\Foo;
require 'Bar.php';
$bar = new Lv\Bar; # error will trigged by this line
Just run php app.php, you will see a fatal error.
Expected result:
----------------
The app.php should run without any error.
Actual result:
--------------
The error given,
PHP Fatal error: Cannot use Lv\Common\Foo as Foo because the name is
already in use in ...Bar.php on line 3
--
Edit bug report at https://bugs.php.net/bug.php?id=70135&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=70135&r=trysnapshot54
Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=70135&r=trysnapshot55
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=70135&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=70135&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=70135&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=70135&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=70135&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=70135&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=70135&r=support
Expected behavior: https://bugs.php.net/fix.php?id=70135&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=70135&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=70135&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=70135&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=70135&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=70135&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=70135&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=70135&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=70135&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=70135&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=70135&r=mysqlcfg
Thread (5 messages)
- php at lvht dot net