Edit report at https://bugs.php.net/bug.php?id=64346&edit=1
ID: 64346 User updated by: gen dot work at gmail dot com Reported by: gen dot work at gmail dot com Summary: Function name resolution and eval -Status: Feedback +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: 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 Previous Comments: ------------------------------------------------------------------------ [2013-03-04 13:50:20] larue...@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] larue...@php.net or maybe we should document this behavior, since disable it will bring performance issue ------------------------------------------------------------------------ [2013-03-04 10:38:17] larue...@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 ------------------------------------------------------------------------ [2013-03-04 10:11:24] gen dot work at gmail dot com Description: ------------ The code below works as expected on version 5.3. Test script: --------------- namespace Foo { function bar() { var_dump(is_callable('Foo\\time')); var_dump(time()); } } namespace { \Foo\bar(); eval('namespace Foo; function time() { return -1; }'); \Foo\bar(); } Expected result: ---------------- bool(false) int(1362390237) bool(true) int(-1) Actual result: -------------- bool(false) int(1362390237) bool(true) int(1362390237) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=64346&edit=1