在页面模板上使用样式表标题的原因是什么？在php中，关键值是在注释块中指定的，而不仅仅是声明常量、对象或其他php结构？

样式表标题如下所示：

/*
Theme Name: Twenty Fifteen Child
Theme URI:  *
Description: Twenty Fifteen Child Theme
Author: John Doe
Author URI:  *
Template: twentyfifteen
Version: 1.0.0
License: GNU General Public License v2 or later
License URI:*  
Tags: light, dark, two-columns, right-sidebar, responsive-layout,     accessibility-ready
Text Domain: twenty-fifteen-child
*/

与将这些值放入数组相比，注释块中的活动代码有什么优势，如下例所示？没有php代码比在注释中添加实时值更好的了吗？

$child_theme_definition=array();
$child_theme_definition[\'theme_name\']=\'Twenty Fifteen Child\';
$child_theme_definition[\'theme_uri\']=\'\'*;
$child_theme_definition[\'Description\']=\'Twenty Fifteen Child Theme\';
$child_theme_definition[\'Author\']=\'John Doe\';
$child_theme_definition[\'Author URI\']=\'\'*;
$child_theme_definition[\'Template\']=\'twentyfifteen\';
$child_theme_definition[\'Version\']=\'1.0.0\';
$child_theme_definition[\'License\']=\'GNU General Public License v2 or later\';
$child_theme_definition[\'License URI\']=\'\'*;
$child_theme_definition[\'Tags\']=\'light, dark, two-columns, right-sidebar, responsive-layout, accessibility-ready
Text Domain: twenty-fifteen-child\';

*URL省略，因为我的新帐户不允许在一篇文章中包含两个以上的URL。