Bug #73220 [NEW]: Classes implementing an interface can violate its method's signatures

From: phansys at gmail dot com Operating system: any PHP version: 7.0.11 Package: PHP Language Specification Bug Type: Bug Bug description:Classes implementing an interface can violate its method's signatures Description: ------------ Classes implementing an interface can violate its method's signatures by adding more arguments with a default value. Test script: --------------- interface A { public function test($one = null); } class B implements A { public function test($one = null, $two = null) { var_dump($one, $two); } } Expected result: ---------------- Fatal error: Declaration of B::test($one, $two) must be compatible with A::test($one = NULL) Actual result: -------------- No error. -- Edit bug report at https://bugs.php.net/bug.php?id=73220&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73220&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73220&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73220&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73220&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73220&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73220&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73220&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73220&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73220&r=support Expected behavior: https://bugs.php.net/fix.php?id=73220&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73220&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73220&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73220&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73220&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73220&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73220&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73220&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73220&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73220&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73220&r=mysqlcfg