Newsgroups: php.internals Path: news.php.net Xref: news.php.net php.internals:79584 Return-Path: Mailing-List: contact internals-help@lists.php.net; run by ezmlm Delivered-To: mailing list internals@lists.php.net Received: (qmail 94987 invoked from network); 11 Dec 2014 22:43:15 -0000 Received: from unknown (HELO lists.php.net) (127.0.0.1) by localhost with SMTP; 11 Dec 2014 22:43:15 -0000 Authentication-Results: pb1.pair.com header.from=cmbecker69@gmx.de; sender-id=pass Authentication-Results: pb1.pair.com smtp.mail=cmbecker69@gmx.de; spf=pass; sender-id=pass Received-SPF: pass (pb1.pair.com: domain gmx.de designates 212.227.15.18 as permitted sender) X-PHP-List-Original-Sender: cmbecker69@gmx.de X-Host-Fingerprint: 212.227.15.18 mout.gmx.net Received: from [212.227.15.18] ([212.227.15.18:63130] helo=mout.gmx.net) by pb1.pair.com (ecelerity 2.1.1.9-wez r(12769M)) with ESMTP id C1/05-58820-10E1A845 for ; Thu, 11 Dec 2014 17:43:14 -0500 Received: from [192.168.0.100] ([91.67.244.80]) by mail.gmx.com (mrgmx001) with ESMTPSA (Nemesis) id 0MbfnB-1YIEjj0sh3-00J2t8 for ; Thu, 11 Dec 2014 23:43:10 +0100 Message-ID: <548A1E05.8070109@gmx.de> Date: Thu, 11 Dec 2014 23:43:17 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: internals@lists.php.net References: <20141211223156.GC431@phcomp.co.uk> In-Reply-To: <20141211223156.GC431@phcomp.co.uk> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:h1nKdtduacYj7AgN6e1C8Vc7I68nJP3tm1obMVzyAPqzF6kSJw4 6Al4MZvr4iNoeaqcOuiewurZ0Az/UjB8gbqWuRAY1Gmb0JvHXA3pPr+pOTNdwjHOCKYiAKk jTgn+4kSZ4ZikiIz5p9Sp9LnXp1qYhLtvXQaWAou62AZrhiWGh0/8x8kBmCa3qWAx0fS6yx kt05oNpKVtZumqnudbolA== X-UI-Out-Filterresults: notjunk:1; Subject: Re: Question on Null Coalesce Operator ( ?? ) From: cmbecker69@gmx.de (Christoph Becker) Alain Williams wrote: > I am updating a PHP course that I occasionally teach ... > > Null Coalesce Operator ( ?? ) > What are the precedence and associativity ? > > https://wiki.php.net/rfc/isset_ternary According to master[1] it's right associative and the precendence is between ?: and ||. [1] -- Christoph M. Becker