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使用RSS来订阅一些比较好的博客是获取信息的一种好方式,为了使这种订阅更加有效,一个好的订阅工具是必不可少的了。
有比较多的RSS阅读器,比较有代表性的是: 基于Web的Google Reader和基于桌面的FeedDemon。
基于Web的Google Reader功能与FeedDemon类似,不过由于是基于Web的,所以操作的流畅性不如基于桌面的FeedDemon。
FeedDemon也是一个免费软件,主要的特色功能如下,推荐使用:

Google Reader Synchronization
Use FeedDemon at home, your office, or anywhere you go and keep your feeds, tags and shared items synched between locations.

Sharing
FeedDemon’s simple single-click sharing lets your friends subscribe to your favorite articles.

Tagging
Assign your own keywords to items, making it easy to classify and locate articles you’ve previously read.

Watches
Tell FeedDemon to let you know when your keywords appear in any feed you’re subscribed to.

Search Feeds
Get alerted when your keywords appear in any feed, regardless of whether you’re subscribed to it.

Podcasts
Let FeedDemon automatically download audio files and copy them to your iPod or other media device.

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最近,PHP脚本语言中新发现的一个BUG: 当PHP执行转换超大浮点数的代码时,可能导致服务器宕机,这对基于PHP的网站的安全产生了一定的影响。这一错误只影响版本号为5.2和5.3的 PHP 发行版,并且只在使用 X87 指令集的32位英特尔CPU上出现。
在命令行执行如下代码即可测试您的系统当前版本的PHP是否受此BUG影响:
<?php
/*
  +----------------------------------------------------------------------+
  | PHP Version 5                                                        |
  +----------------------------------------------------------------------+
  | Copyright (c) 2011 The PHP Group                                     |
  +----------------------------------------------------------------------+
  | This source file is subject to version 3.01 of the PHP license,      |
  | that is bundled with this package in the file LICENSE, and is        |
  | available through the world-wide-web at the following url:           |
  | http://www.php.net/license/3_01.txt                                  |
  | If you did not receive a copy of the PHP license and are unable to   |
  | obtain it through the world-wide-web, please send a note to          |
  | license@php.net so we can mail you a copy immediately.               |
  +----------------------------------------------------------------------+
  | Author: Johannes Schlueter <johannes@php.net>                        |
  +----------------------------------------------------------------------+
*/

if (PHP_SAPI != 'cli') {
    die("Please run this test from CLI!\n");
}

ini_set('display_errors', 1);
ini_set('output_buffering', 0);
error_reporting(-1);
if (!ini_get('safe_mode')) {
    set_time_limit(1);
}

echo "Testing float behaviour. If this script hangs or terminates with an error ".
     "message due to maximum execution time limit being reached, you should ".
     "update your PHP installation asap!\n";
echo "For more information refer to <http://bugs.php.net/53632>.\n";
$d = (double)"2.2250738585072011e-308";
echo "Your system seems to be safe.\n";
?>
如果上述代码证实您的系统中当前的PHP版本受此BUG影响,强烈建议升级PHP到BUG修复版本PHP-5.3.5。

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