Bug #64346 [Asn]: Function name resolution and eval

Edit report at https://bugs.php.net/bug.php?id=64346&edit=1 ID: 64346 Updated by: dmitry@php.net Reported by: gen dot work at gmail dot com Summary: Function name resolution and eval Status: Assigned Type: Bug Package: *General Issues Operating System: Ubuntu 12.10 PHP Version: 5.4.12 Assigned To: dmitry Block user comment: N Private report: N New Comment: I suppose the bug has to be fixed. The problem that the fix will slowdown each call to unqualified function from a namespace :( I'm not sure if we like to do it... Previous Comments: ------------------------------------------------------------------------ [2013-03-04 14:53:34] gen dot work at gmail dot com '\Foo\bar' -> '\Foo\time' in my prev comment ------------------------------------------------------------------------ [2013-03-04 14:50:18] gen dot work at gmail dot com The main issue I see is that is_callabe() is lying. It says that '\Foo\bar' is callable, but in fact it's not. So just document this behavior is not enough imo, is_callabe should be tweaked to reflect actual status. And I don't quite understand suggested workaraund. Could you please give a simple example? In my usecase I try to mock time function to avoid sleep() calls: https://github.com/rybakit/phive-queue/blob/master/tests/Phive/Tests/Queue/AbstractQueueTest.php#L59 https://github.com/rybakit/phive-queue/blob/master/src/Phive/Queue/InMemoryQueue.php#L40 ------------------------------------------------------------------------ [2013-03-04 13:50:20] laruence@php.net @gen the main brief is, when you first call to \Foo\Bar, the 'time' constant in the \Foo\Bar function, will bundle to "time function", in the first time , it obviously will be bundled to \time. then when you sencond call to it. PHP will use that cache instead of look up in function table again for "time" function, to increase performance.. so, if we disable the cache, then performance slowdown... what do you think? a workaround is define a Foo\Bar2, after you eval, you call to it, then it will bundled to \Foo\Time.. ------------------------------------------------------------------------ [2013-03-04 13:43:29] laruence@php.net or maybe we should document this behavior, since disable it will bring performance issue ------------------------------------------------------------------------ [2013-03-04 10:38:17] laruence@php.net confirm this change. this is due to the 5.4 performance improvement: "literal cache" @dmitry, maybe we should not cache the function entry for INIT_NS_FCALL? thanks ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=64346 -- Edit this bug report at https://bugs.php.net/bug.php?id=64346&edit=1