Bug #76905 [NEW]: Scope variable resolution

From: rawsrc at gmail dot com Operating system: Windows 7 PHP version: 7.2.10 Package: *General Issues Bug Type: Bug Bug description:Scope variable resolution Description: ------------ Hi, Standard PHP 7.2.10 installation on Windows 7x64. Test script: --------------- <?php declare(strict_types=1); namespace ns1 { class abc { } }; namespace ns2 { interface interfaceXyz { public function getMe(): \ns1\abc; } }; namespace ns3 { class def extends \ns1\abc { function checkInstance() { return ($this instanceof \ns1\abc) ? '\ns3\def is an instance of \ns1\abc' : '\ns3\def is different of \ns1\abc'; } } echo (new def)->checkInstance(); // result = "\ns3\def is an instance of \ns1\abc" }; namespace ns4 { class ghi implements \ns2\interfaceXyz { public function getMe(): \ns3\def { // here : \ns3\def (derivated from \ns1\abc ) is an instance of \ns1\abc but is not compliant with the interface that expect an \ns1\abc instance !!! return 'hello world'; } } echo (new ghi)->getMe(); } Expected result: ---------------- Hello world Actual result: -------------- \ns3\def is an instance of \ns1\abc Fatal error: Declaration of ns4\ghi::getMe(): ns3\def must be compatible with ns2\interfaceXyz::getMe(): ns1\abc -- Edit bug report at https://bugs.php.net/bug.php?id=76905&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76905&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76905&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76905&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76905&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76905&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76905&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76905&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76905&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76905&r=support Expected behavior: https://bugs.php.net/fix.php?id=76905&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76905&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76905&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76905&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76905&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76905&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76905&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76905&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76905&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76905&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76905&r=mysqlcfg