Bug #72034 [NEW]: abstract classes' method compatibility is checked the other way round

From: youwishspambot at example dot org Operating system: PHP version: 7.0.5 Package: Scripting Engine problem Bug Type: Bug Bug description:abstract classes' method compatibility is checked the other way round Description: ------------ https://3v4l.org/LKFbZ and it's a problem for optional parameters: Test script: --------------- interface AAA{ function method($x); } interface BBB extends AAA{ function method($x, $y = null); } // this works correctly: class AA_ implements AAA{ function method($x){} } class BB_ extends AA_ implements BBB{ function method($x, $y = null){} } (new BB_())->method(1, 1); // this doesn't: abstract class AAA_ implements AAA{} abstract class BBB_ extends AAA_ implements BBB{} // AAA::method is checked to be compatible against BBB::method, // while it should happen the opposite -- Edit bug report at https://bugs.php.net/bug.php?id=72034&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=72034&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=72034&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=72034&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=72034&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=72034&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=72034&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=72034&r=needscript Try newer version: https://bugs.php.net/fix.php?id=72034&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=72034&r=support Expected behavior: https://bugs.php.net/fix.php?id=72034&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=72034&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=72034&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=72034&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72034&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=72034&r=dst IIS Stability: https://bugs.php.net/fix.php?id=72034&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=72034&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=72034&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=72034&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=72034&r=mysqlcfg