描述：

获取一个主题或者插件支持的功能

用法：

<?php get_theme_support( $feature ); ?>

参数：

$feature

(string) (必填) 要添加的功能的名称.

默认值: None

Features list:

• Sidebar Widgets
• Navigation Menus
• Post Formats
• Post Thumbnails
• Custom Backgrounds
• Custom Headers
• Automatic Feed Links
• Editor Style

源文件：

function get_theme_support( $feature ) {
    global $_wp_theme_features;
    if ( ! isset( $_wp_theme_features[ $feature ] ) ) {
        return false;
    }
 
    if ( func_num_args() <= 1 ) {
        return $_wp_theme_features[ $feature ];
    }
 
    $args = array_slice( func_get_args(), 1 );
    switch ( $feature ) {
        case 'custom-logo':
        case 'custom-header':
        case 'custom-background':
            if ( isset( $_wp_theme_features[ $feature ][0][ $args[0] ] ) ) {
                return $_wp_theme_features[ $feature ][0][ $args[0] ];
            }
            return false;
 
        default:
            return $_wp_theme_features[ $feature ];
    }
}