Bug #54457 [NEW]: is_subclass_of inconsistent result when used with interfaces

From: Operating system: all PHP version: 5.3.6 Package: Class/Object related Bug Type: Bug Bug description:is_subclass_of inconsistent result when used with interfaces Description: ------------ hi interface Y{} class A implements Y{} class B extends A{} echo (is_subclass_of("A", "Y") ? "TRUE" : "FALSE")."\n"; // false: incorrect echo (is_subclass_of("B", "Y") ? "TRUE" : "FALSE")."\n"; // true: correct is_subclass_of must includes interfaces or not, not sometimes not and sometimes yes thank you -- Edit bug report at http://bugs.php.net/bug.php?id=54457&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=54457&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=54457&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=54457&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=54457&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=54457&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=54457&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=54457&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=54457&r=needscript Try newer version: http://bugs.php.net/fix.php?id=54457&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=54457&r=support Expected behavior: http://bugs.php.net/fix.php?id=54457&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=54457&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=54457&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=54457&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=54457&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=54457&r=dst IIS Stability: http://bugs.php.net/fix.php?id=54457&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=54457&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=54457&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=54457&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=54457&r=mysqlcfg