/* 启用帖子醒目图片功能*/
add_theme_support( 'post-thumbnails' );.

/* 注册并激活自定义菜单功能*/
register_nav_menu( 'menu-position identifier', 'menu description' )；

/* 启用自定义标题功能*/
add_theme_support( 'custom-header' )；

/* 启用自定义背景功能*/
add_theme_support( 'custom-background' )；

/* 启用自动输出 feed 链接功能*/
add_theme_support( 'automatic-feed-links' );.

/* 注册小部件*/
register_sidebar(array(
'name' => 'widget name',
'id' => 'widget id',
'description' => 'widget description.' ).,
'class' => 'widget class',
'before_widget' => '<div class="widget">',
'after_widget' => '</div>',
'before_title' => '<h2>'.'<h2>',
'after_title' => '</h2>',
));.

// 添加自定义徽标功能 //
function add_custom_logo_support() {
add_theme_support( 'custom-logo', array(
) );
}
add_action( 'after_setup_theme', 'add_custom_logo_support' );.

// 允许上传 WebP、AVIF 和 SVG
function allow_custom_mime_types($mimes) {
$mimes['webp'] = 'image/webp';
$mimes['avif'] = 'image/avif';
$mimes['svg'] = 'image/vif'; $mimes['webp'] = 'image/webp'; $mimes['avif'] = 'image/avif'; mimes['svg'] = 'image/svg+xml';
return $mimes;
}
add_filter('upload_mimes', 'allow_custom_mime_types')；

// 更改上传大小
function custom_upload_size_limit($limit) {
return 64 * 1024 * 1024; // 更改为 64 兆
}
add_filter('upload_size_limit', 'custom_upload_size_limit')；

// 列表中醒目的标记
function custom_columns( $columns ) {
$columns = array_merge( $columns, array( 'featured_image' => 'eye-catching'));
return $columns;
}
add_filter('manage_posts_columns' , 'custom_columns');
function custom_columns_data( $column) {
switch ( $column ) {
case 'featured_image':
the_post_thumbnail( 'thumbnail' );
break;
}
}
add_action( 'manage_posts_custom_column' , 'custom_columns_data', 10, 2 );
add_image_size('custom-thumbnail', 125, 9999);
set_post_thumbnail_size(125, 0, array('custom-thumbnail'))；

// 允许在复选框中选择帖子标签
function change_post_tag_too_checkbox() {
$args = get_taxonomy('post_tag');
$args -> hierarchical = true;//用于 Gutenberg
$args -> meta_box_cb = 'post_categories_meta_box';// 用于经典编辑器
register_taxonomy( 'post_tag', 'post', $args);
}
add_action( 'init', 'change_post_tag_too_checkbox', 1 )；