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[2014-01-07 00:41 UTC] westie at typefish dot co dot uk
Description:
------------
Whenever you try to invoke a closure using ReflectionFunction, the object context that is bound to it is not carried across, therefore execution fails.
This is broken for:
ReflectionFunction::invoke
ReflectionFunction::invokeArgs
The desired functionality can be obtained by:
Directly calling: $closure()
call_user_func($closure)
This happens when you ->bindTo a closure, or you get a closure for a method using ReflectionMethod::getClosure().
Verified on PHP 5.4 latest dotdeb stable and 5.5 latest dotdeb stable.
Test script:
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- http://ss.westie.sh/xpwa
Expected result:
----------------
outragebot@thor:~$ php ./bug.php
alpha.bravo: Valid representation
reflection of alpha.bravo: Valid representation
closure of alpha.bravo: Valid representation
call_user_func of closure: Valid representation
closure cl of c(alpha.bravo): Alpha
scope cl of c(alpha.bravo): Alpha
reflection of c(alpha.bravo): Valid representation
Actual result:
--------------
outragebot@thor:~$ php ./bug.php
alpha.bravo: Valid representation
reflection of alpha.bravo: Valid representation
closure of alpha.bravo: Valid representation
call_user_func of closure: Valid representation
closure cl of c(alpha.bravo): Alpha
scope cl of c(alpha.bravo): Alpha
reflection of c(alpha.bravo): PHP Fatal error: Using $this when not in object context in /home/outragebot/bug.php on line 10
PHP Stack trace:
PHP 1. {main}() /home/outragebot/bug.php:0
PHP 2. ReflectionFunction->invoke() /home/outragebot/bug.php:32
PHP 3. Alpha::bravo() /home/outragebot/bug.php:32
PatchesPull RequestsHistoryAllCommentsChangesGit/SVN commits
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Last updated: Thu Nov 21 08:01:29 2024 UTC |
I've encountered the same issue. Very annoying. The problem is that closures defined inside a class method are effectively "anonymous methods" (since PHP 5.4). When closures were introduced, the ReflectionFunction constructor was amended to accept either a function name or a Closure instance. Later $this for closures was added in 5.4, but ReflectionMethod didn't get the same treatment. Something has to be done, either ReflectionMethod should support a closure instance where you normally pass a method name, or ReflectionFunction should "remember" the object context. The latter probably makes more sense, if also class Closure gains a method like, say, getBinding(), which would mean we can write code like this: // Return an object instance ("$this") for closures defined in object context. // Returns a string with full class name for closures defined in static method context. // Return null for closures defined in global and function context. $binding = $closure->getBinding(); if ($thisBinding === null) { $reflection = new \ReflectionFunction($closure); } else { $reflection = new \ReflectionMethod($binding, $closure); } Right now attempting to instantiate ReflectionMethod with a closure in any way causes only warnings and fatal errors... Just my thoughts. Thanks for reporting the problem, I hope we have a solution eventually.