Re: Possible Bug with Interface, Constants and Inheritance

Am 27.06.16 um 17:41 schrieb Bishop Bettini: > On Mon, Jun 27, 2016 at 11:31 AM, Andreas Heigl <andreas@heigl.org> wrote: > >> Am 27.06.16 um 15:28 schrieb Karl Pflästerer: >>> Andreas Heigl <andreas@heigl.org> writes: >>> >>>> Am 27.06.16 um 15:01 schrieb Karl Pflästerer: >>>>> interface I1 { const C1 = '';} >>>>> class C3 implements I1 { const C1 = 'c2';} >>>>> $c3 = new C3; >>>>> var_dump($c3::C1); >>>> >>>> According to https://3v4l.org/jIcs6 it looks like >>>> that's intended >>>> behaviour ;) >>> >>> But why does it work in the CLI if I write the code (instead of using a >>> script)? That's my question. >> >> It doesn't. At least not on my machine. This is the output I get: >> >> $ php -v >> PHP 7.1.0alpha2 (cli) (built: Jun 24 2016 13:50:28) ( NTS ) >> Copyright (c) 1997-2016 The PHP Group >> Zend Engine v3.1.0-dev, Copyright (c) 1998-2016 Zend Technologies >> > > Technically, this is a different version than reported. Nonetheless, on the > same version my REPL complains as well, I suspect because the original > report misspelled the INI setting ("-ddispplay_errors=On", notice the > double "p"): > > $ php -v > PHP 7.0.7 (cli) (built: May 28 2016 08:26:36) ( NTS ) > Copyright (c) 1997-2016 The PHP Group > Zend Engine v3.0.0, Copyright (c) 1998-2016 Zend Technologies > with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2016, by Zend > Technologies > with Xdebug v2.4.0, Copyright (c) 2002-2016, by Derick Rethans > > $ php -a > Interactive shell > > php > interface I1 { const C1 = ''; } > php > class C3 implements I1 { const C1 = 'c2'; } > PHP Fatal error: Cannot inherit previously-inherited or override constant > C1 from interface I1 in php shell code on line 1 > PHP Stack trace: > PHP 1. {main}() php shell code:0 > > > >> So it crashes with a fatal error when Implementing the interface. It'S >> interesting though that the script allows me to instantiate the class >> nonetheless. That's right. >> > > Under normal interpretive operation, the Fatal terminates the script. But > in the case of the REPL command line, those are swallowed up and you can > keep going. Same as like: > > php > foo(); > PHP Warning: Uncaught Error: Call to undefined function foo() in php shell > code:1 > Stack trace: > #0 {main} > thrown in php shell code on line 1 > PHP Stack trace: > PHP 1. {main}() php shell code:0 > php > echo 'hi'; > hi > > I'm not seeing any bugs here. Thanks for the info. What I find strange is that I can instantiate the class "C3" even though the declaration of the class is broken. I wouldn't say it's a bug, but interesting. Cheers Andreas -- ,,, (o o) +---------------------------------------------------------ooO-(_)-Ooo-+ | Andreas Heigl | | mailto:andreas@heigl.org N 50°22'59.5" E 08°23'58" | | http://andreas.heigl.org http://hei.gl/wiFKy7 | +---------------------------------------------------------------------+ | http://hei.gl/root-ca | +---------------------------------------------------------------------+

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