Newsgroups: php.internals Path: news.php.net Xref: news.php.net php.internals:32327 Return-Path: Mailing-List: contact internals-help@lists.php.net; run by ezmlm Delivered-To: mailing list internals@lists.php.net Received: (qmail 61571 invoked by uid 1010); 14 Sep 2007 17:11:46 -0000 Delivered-To: ezmlm-scan-internals@lists.php.net Delivered-To: ezmlm-internals@lists.php.net Received: (qmail 61556 invoked from network); 14 Sep 2007 17:11:46 -0000 Received: from unknown (HELO lists.php.net) (127.0.0.1) by localhost with SMTP; 14 Sep 2007 17:11:46 -0000 Authentication-Results: pb1.pair.com smtp.mail=hartmut@mysql.com; spf=permerror; sender-id=unknown Authentication-Results: pb1.pair.com header.from=hartmut@mysql.com; sender-id=unknown Received-SPF: error (pb1.pair.com: domain mysql.com from 213.136.52.68 cause and error) X-PHP-List-Original-Sender: hartmut@mysql.com X-Host-Fingerprint: 213.136.52.68 mailgate-out2.mysql.com Linux 2.5 (sometimes 2.4) (4) Received: from [213.136.52.68] ([213.136.52.68:58241] helo=mailgate.mysql.com) by pb1.pair.com (ecelerity 2.1.1.9-wez r(12769M)) with ESMTP id 93/A2-44372-FC0CAE64 for ; Fri, 14 Sep 2007 13:11:44 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by mailgate.mysql.com (8.13.8/8.13.8) with ESMTP id l8EHBesm010310; Fri, 14 Sep 2007 19:11:40 +0200 Received: from mail.mysql.com ([10.222.1.99]) by localhost (mailgate.mysql.com [10.222.1.98]) (amavisd-new, port 10026) with LMTP id 07538-05; Fri, 14 Sep 2007 19:11:39 +0200 (CEST) Received: from [10.100.64.53] (10-100-64-53.mysql.internal [10.100.64.53]) (authenticated bits=0) by mail.mysql.com (8.13.3/8.13.3) with ESMTP id l8EHBaTQ032450 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 14 Sep 2007 19:11:37 +0200 Message-ID: <46EAC0C7.5000600@mysql.com> Date: Fri, 14 Sep 2007 19:11:35 +0200 Organization: MySQL AB User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.9) Gecko/20061211 SeaMonkey/1.0.7 MIME-Version: 1.0 To: Nuno Lopes CC: PHPdev , stas@zend.com, andi@php.net, dmitry@php.net References: <001f01c7f6f0$dbcf5350$4001a8c0@pc07653> In-Reply-To: <001f01c7f6f0$dbcf5350$4001a8c0@pc07653> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: quoted-printable X-Virus-Scanned: by amavisd-new at mailgate.mysql.com Subject: Re: [PHP-DEV] RFC: mark functions as const for possible optimizations From: hartmut@mysql.com (Hartmut Holzgraefe) Nuno Lopes wrote: > My proposal is the following: > some functions when fed with constant arguments always return a constan= t=20 > value, too. e.g.: > strlen('abcd') =3D=3D=3D 4. wouldn't that be called "deterministic" and not "const"? --=20 Hartmut Holzgraefe, Principal Support Engineer . Discover new MySQL Monitoring & Advisory features at: http://www.mysql.com/products/enterprise/whats_new.html Hauptsitz: MySQL GmbH, Dachauer Str.37, 80335 M=FCnchen Gesch=E4ftsf=FChrer: Kaj Arn=F6 - HRB M=FCnchen 162140