请尽快升级PHP到5.2.17或5.3.5

具体表现为 CPU 使用率 为 100%

1. PHP 5.3.5 and 5.2.17 Released!
   
2. 
   
3. [06-Jan-2011]
   
4. The PHP development team would like to announce the immediate availability of PHP 5.3.5 and 5.2.17.
   
5. 
   
6. This release resolves a critical issue, reported as PHP bug #53632 and CVE-2010-4645, where conversions from string to double might cause the PHP interpreter to hang on systems using x87 FPU registers.
   
7. 
   
8. The problem is known to only affect x86 32-bit PHP processes, regardless of whether the system hosting PHP is 32-bit or 64-bit. You can test whether your system is affected by running this script from the command line.
   
9. 
   
10. All users of PHP are strongly advised to update to these versions immediately.

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测试脚本

1. <?php
   
2. /*
   
3.   +----------------------------------------------------------------------+
   
4.   | PHP Version 5                                                        |
   
5.   +----------------------------------------------------------------------+
   
6.   | Copyright (c) 2011 The PHP Group                                     |
   
7.   +----------------------------------------------------------------------+
   
8.   | This source file is subject to version 3.01 of the PHP license,      |
   
9.   | that is bundled with this package in the file LICENSE, and is        |
   
10.   | available through the world-wide-web at the following url:           |
    
11.   | http://www.php.net/license/3_01.txt                                  |
    
12.   | If you did not receive a copy of the PHP license and are unable to   |
    
13.   | obtain it through the world-wide-web, please send a note to          |
    
14.   | license@php.net so we can mail you a copy immediately.               |
    
15.   +----------------------------------------------------------------------+
    
16.   | Author: Johannes Schlueter <johannes@php.net>                        |
    
17.   +----------------------------------------------------------------------+
    
18. */
    
19. 
    
20. if (PHP_SAPI != 'cli') {
    
21.     die("Please run this test from CLI!\n");
    
22. }
    
23. 
    
24. ini_set('display_errors', 1);
    
25. ini_set('output_buffering', 0);
    
26. error_reporting(-1);
    
27. if (!ini_get('safe_mode')) {
    
28.     set_time_limit(1);
    
29. }
    
30. 
    
31. echo "Testing float behaviour. If this script hangs or terminates with an error ".
    
32.      "message due to maximum execution time limit being reached, you should ".
    
33.      "update your PHP installation asap!\n";
    
34. echo "For more information refer to <http://bugs.php.net/53632>.\n";
    
35. $d = (double)"2.2250738585072011e-308";
    
36. echo "Your system seems to be safe.\n";
    
37. ?>

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哇 好多cpu100%