Req #67097 [NEW]: Allow traits to require class/interface

From: thierry at byscripts dot info Operating system: PHP version: 5.5.11 Package: Class/Object related Bug Type: Feature/Change Request Bug description:Allow traits to require class/interface Description: ------------ I think we need to be able to allow traits to require that the class in which it can be used must be an instance of an arbitrary class/interface. Expected result: ---------------- trait AirConditioning requires Vehicle { public function increaseTemperature() { $this->ambientTemperature++; } public function decreaseTemperature() { $this->ambientTemperature--; } } abstract class Vehicle { protected $ambientTemperature; } class Car extends Vehicle {} class Truck extends Vehicle {} class Dog extends Animal {} class MyOldCar extends Car {} class MyNewCar extends Car { use AirConditioning; // Should be OK } class MyLabrador extends Dog { use AirConditioning; // Should throw an exception } -- Edit bug report at https://bugs.php.net/bug.php?id=67097&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=67097&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=67097&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=67097&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=67097&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=67097&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=67097&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=67097&r=needscript Try newer version: https://bugs.php.net/fix.php?id=67097&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=67097&r=support Expected behavior: https://bugs.php.net/fix.php?id=67097&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=67097&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=67097&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=67097&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=67097&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=67097&r=dst IIS Stability: https://bugs.php.net/fix.php?id=67097&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=67097&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=67097&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=67097&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=67097&r=mysqlcfg