Re: Static Constructors
| From: | Noah Botimer | Date: | Tue, 05 Oct 2004 23:57:22 +0000 |
| Subject: | Re: Static Constructors | ||
| References: | 1 | Groups: | php.internals |
| Request: | Send a blank email to internals+get-13184@lists.php.net to get a copy of this message | ||
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'); ?>