Edit report at https://bugs.php.net/bug.php?id=65039&edit=1
ID: 65039 Updated by: larue...@php.net Reported by: easteregg at verfriemelt dot org Summary: wrong late static binding in traits -Status: Open +Status: Not a bug Type: Bug Package: Scripting Engine problem Operating System: Linux PHP Version: 5.4.16 Block user comment: N Private report: N New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php see following example: <?php trait getObjectById { public static $_cache = []; public static function get($id,$autoload = true) { if (!isset(static::$_cache[$id])) { static::$_cache[$id] = new static($id, $autoload); } return static::$_cache[$id]; } } class User { use getObjectById; } class User2 extends User { public static $_cache = []; // difference here } //class User3 extends User { use getObjectById; } // var_dump(User3::get(1)) would return the right object cause the trait is overwritten var_dump(User::get(1)); var_dump(User2::get(1)); ~ Previous Comments: ------------------------------------------------------------------------ [2013-06-14 11:11:34] easteregg at verfriemelt dot org Description: ------------ Hi when i use a trait with late static bindings i get the wrong bindings, when i use an object A with a trait T and then inherit this trait to a new object B and call the trait T from within that object B, i will get an late binding to object A instead of object B as expected where as when use the traitmethod within the object A and inherit this for object B and then call it, the static binding are bound to object b as expected Test script: --------------- <?php trait getObjectById { public static $_cache = []; public static function get($id,$autoload = true) { if (!isset(static::$_cache[$id])) { static::$_cache[$id] = new static($id, $autoload); } return static::$_cache[$id]; } } class User { use getObjectById; } class User2 extends User { } //class User3 extends User { use getObjectById; } // var_dump(User3::get(1)) would return the right object cause the trait is overwritten var_dump(User::get(1)); var_dump(User2::get(1)); Expected result: ---------------- object(User)[1] object(User2)[1] Actual result: -------------- object(User)[1] object(User)[1] ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=65039&edit=1
