Bug #55268 [NEW]: Traits cannot be used as function/method typehints

From: Operating system: Irrelevant PHP version: 5.4SVN-2011-07-22 (snap) Package: Class/Object related Bug Type: Bug Bug description:Traits cannot be used as function/method typehints Description: ------------ It is not possible to use trait as a typehint in function declaration. Use case: Extending few different classes to use a trait in them where these classes doesn't have same parent. Then I want to specify typehint, because I require some methods which are declared by that trait. Test script: --------------- trait Foo {} class Bar { use Foo; } function test(Foo $obj) { echo 'hello'; } test(new Bar); Expected result: ---------------- hello Actual result: -------------- Catchable fatal error: Argument 1 passed to test() must be an instance of Foo, instance of Bar given... -- Edit bug report at https://bugs.php.net/bug.php?id=55268&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=55268&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=55268&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=55268&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=55268&r=fixed Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=55268&r=needdocs Fixed in release: https://bugs.php.net/fix.php?id=55268&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=55268&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=55268&r=needscript Try newer version: https://bugs.php.net/fix.php?id=55268&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=55268&r=support Expected behavior: https://bugs.php.net/fix.php?id=55268&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=55268&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=55268&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=55268&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=55268&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=55268&r=dst IIS Stability: https://bugs.php.net/fix.php?id=55268&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=55268&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=55268&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=55268&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=55268&r=mysqlcfg