Newsgroups: php.internals Path: news.php.net Xref: news.php.net php.internals:13184 Return-Path: Mailing-List: contact internals-help@lists.php.net; run by ezmlm Delivered-To: mailing list internals@lists.php.net Received: (qmail 5030 invoked by uid 1010); 5 Oct 2004 23:57:23 -0000 Delivered-To: ezmlm-scan-internals@lists.php.net Delivered-To: ezmlm-internals@lists.php.net Received: (qmail 5004 invoked from network); 5 Oct 2004 23:57:23 -0000 Received: from unknown (HELO smtpout01-04.mesa1.secureserver.net) (64.202.165.79) by pb1.pair.com with SMTP; 5 Oct 2004 23:57:23 -0000 Received: (qmail 30701 invoked from network); 5 Oct 2004 23:57:23 -0000 Received: from unknown (66.188.29.245) by smtpout01-04.mesa1.secureserver.net (64.202.165.79) with ESMTP; 05 Oct 2004 23:57:23 -0000 Message-ID: <416334E2.2040902@botimer.net> Date: Tue, 05 Oct 2004 19:57:22 -0400 User-Agent: Mozilla Thunderbird 0.6 (Windows/20040502) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Robert Silva CC: internals@lists.php.net References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [PHP-DEV] Static Constructors From: php@botimer.net (Noah Botimer) Hi Robert, I hate to sound like a pedant, but shouldn't anything like that be explicit? That is, do your own check for prerequisite class variables that need to be set in each static method? Maybe I'm missing the boat, but I'd say that it would be something that should be at the application level, rather than at the system/object-model level. In your example: ... public static function WriteLine($value) { if (is_null(self::$logfile)) self::initialize(); ... } public static initialize() { self::$logfile = fopen('log.txt', 'a'); } ... Thanks, -Noah Robert Silva wrote: > I've put together a rough implementation of static constructors. I'd like to > get peoples thoughts about it then I'll either clean it up and submit it or > nuke it. Basically the class constructor __cconstruct (have any better > ideas?) is called upon the first access to any static property and marks the > class entry as initialized. > > > class Logger { > public static $logfile = null; > > private static function __cconstruct() { > self::$logfile = fopen('log.txt', 'a'); > } > public static function WriteLine($value) { > $value .= PHP_EOL; > fputs(self::$logfile, $value, strlen($value)); > } > > } > > Logger::WriteLine('Static constructors'); > > ?> >