每个程序头部必须有统一的注释块，规则如下：     a．必须包含本程序的描述；     b．必须包含作者；     c．必须包含书写日期；     d．必须包含版本信息；     e．必须包含项目名称；     f．必须包含文件的名称；     g．重要的使用说明，如类的调用方法、注意事项等； 参考例子如下： ~~~ // // +---------------------------------------------------------+ // | PHP version 4.0 // +---------------------------------------------------------+ // | Copyright (c) 1997-2001 The PHP Group // +---------------------------------------------------------+ // | This source file is subject to of the PHP license, // | that is bundled with this packafile LICENSE, and is // | available at through the world-web at // | http://www.php.net/license/2_02.txt. // | If you did not receive a copy of the and are unable to // | obtain it through the world-wide-web,end a note to // | license@php.net so we can mail you a immediately. // +---------------------------------------------------------+ // | Authors: Stig Bakken // | Tomas V.V.Cox // // +———————————————————+ // // $Id: Common.php,v 1.8.2.3 2001/11/13 01:26:48 ssb Exp $ ~~~