Bug #76370 [NEW]: Fatal error instead of warning when extending class that implements interface

From: Date: Thu, 24 May 2018 08:37:33 +0000
Subject: Bug #76370 [NEW]: Fatal error instead of warning when extending class that implements interface
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-215352@lists.php.net to get a copy of this message
From:             kinglozzer at gmail dot com
Operating system: Mac OS X
PHP version:      7.2.5
Package:          Class/Object related
Bug Type:         Bug
Bug description:Fatal error instead of warning when extending class that implements interface

Description:
------------
If a class implements an interface, any child classes method definitions
must match the *parent class* exactly (not the interface) or a fatal
error will occur.

Unexpected behaviour - fatal error: https://3v4l.org/BeFp5

Expected behaviour - warning: https://3v4l.org/ZhHrE (without
implementing an interface).

The introduction of an interface to the base class should not affect the
behaviour of child classes.

Test script:
---------------
https://3v4l.org/BeFp5

Expected result:
----------------
Warning: Declaration of Bar::method() should be compatible with
Foo::method($arg = NULL)

Actual result:
--------------
Fatal error: Declaration of Bar::method() must be compatible with
Foo::method($arg = NULL)

-- 
Edit bug report at https://bugs.php.net/bug.php?id=76370&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=76370&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=76370&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=76370&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=76370&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=76370&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=76370&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=76370&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=76370&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=76370&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=76370&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=76370&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=76370&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=76370&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76370&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=76370&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=76370&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=76370&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=76370&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=76370&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=76370&r=mysqlcfg



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