From: stealz at op dot pl
Operating system: Windows 7
PHP version: 5.4.9
Package: Class/Object related
Bug Type: Bug
Bug description:Using twice the same trait causes fatal error.
Description:
------------
I think PHP should check whether traits were used already (ex. in parent
class) and ignore them instead using again. It causes fatal error due to
collisions which are obvious, because trait name is the same.
What's interesting, collisions refer only to methods. PHP seems not to see
the problem if double-used trait contains properties only.
Test script:
---------------
trait LifeOrganism {
public $age; // it's fine
#public function live() {} // uncomment to get Fatal error
}
trait Man {
use LifeOrganism;
}
trait Elephant {
use LifeOrganism;
}
class ElephantMan {
use Man, Elephant;
}
Expected result:
----------------
Ignore trait which was already used.
Actual result:
--------------
Fatal error.
--
Edit bug report at https://bugs.php.net/bug.php?id=63652&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=63652&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=63652&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=63652&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=63652&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=63652&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=63652&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=63652&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=63652&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=63652&r=support
Expected behavior: https://bugs.php.net/fix.php?id=63652&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=63652&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=63652&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=63652&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=63652&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=63652&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=63652&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=63652&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=63652&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=63652&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=63652&r=mysqlcfg
