wp_default_styles ( $styles )
wp_default_styles是一个WordPress函数,负责注册加载在WordPress站点每个页面上的默认样式。这些样式提供了核心功能,是WordPress正常运行所必需的。
为$styles对象分配默认样式。
没有任何东西被返回,因为$styles参数是通过引用传递的。意味着无论传递什么对象都会被更新,而不必将传递的变量重新分配到相同的值。这就节省了内存。
添加默认样式并不是唯一的任务,它还分配了base_url 属性、默认版本,以及对象的文本方向。
function wp_default_styles( $styles ) { global $editor_styles; // Include an unmodified $wp_version. require ABSPATH . WPINC . '/version.php'; if ( ! defined( 'SCRIPT_DEBUG' ) ) { define( 'SCRIPT_DEBUG', false !== strpos( $wp_version, '-src' ) ); } $guessurl = site_url(); if ( ! $guessurl ) { $guessurl = wp_guess_url(); } $styles->base_url = $guessurl; $styles->content_url = defined( 'WP_CONTENT_URL' ) ? WP_CONTENT_URL : ''; $styles->default_version = get_bloginfo( 'version' ); $styles->text_direction = function_exists( 'is_rtl' ) && is_rtl() ? 'rtl' : 'ltr'; $styles->default_dirs = array( '/wp-admin/', '/wp-includes/css/' ); // Open Sans is no longer used by core, but may be relied upon by themes and plugins. $open_sans_font_url = ''; /* * translators: If there are characters in your language that are not supported * by Open Sans, translate this to 'off'. Do not translate into your own language. */ if ( 'off' !== _x( 'on', 'Open Sans font: on or off' ) ) { $subsets = 'latin,latin-ext'; /* * translators: To add an additional Open Sans character subset specific to your language, * translate this to 'greek', 'cyrillic' or 'vietnamese'. Do not translate into your own language. */ $subset = _x( 'no-subset', 'Open Sans font: add new subset (greek, cyrillic, vietnamese)' ); if ( 'cyrillic' === $subset ) { $subsets .= ',cyrillic,cyrillic-ext'; } elseif ( 'greek' === $subset ) { $subsets .= ',greek,greek-ext'; } elseif ( 'vietnamese' === $subset ) { $subsets .= ',vietnamese'; } // Hotlink Open Sans, for now. $open_sans_font_url = "https://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,300,400,600&subset=$subsets&display=fallback"; } // Register a stylesheet for the selected admin color scheme. $styles->add( 'colors', true, array( 'wp-admin', 'buttons' ) ); $suffix = SCRIPT_DEBUG ? '' : '.min'; // Admin CSS. $styles->add( 'common', "/wp-admin/css/common$suffix.css" ); $styles->add( 'forms', "/wp-admin/css/forms$suffix.css" ); $styles->add( 'admin-menu', "/wp-admin/css/admin-menu$suffix.css" ); $styles->add( 'dashboard', "/wp-admin/css/dashboard$suffix.css" ); $styles->add( 'list-tables', "/wp-admin/css/list-tables$suffix.css" ); $styles->add( 'edit', "/wp-admin/css/edit$suffix.css" ); $styles->add( 'revisions', "/wp-admin/css/revisions$suffix.css" ); $styles->add( 'media', "/wp-admin/css/media$suffix.css" ); $styles->add( 'themes', "/wp-admin/css/themes$suffix.css" ); $styles->add( 'about', "/wp-admin/css/about$suffix.css" ); $styles->add( 'nav-menus', "/wp-admin/css/nav-menus$suffix.css" ); $styles->add( 'widgets', "/wp-admin/css/widgets$suffix.css", array( 'wp-pointer' ) ); $styles->add( 'site-icon', "/wp-admin/css/site-icon$suffix.css" ); $styles->add( 'l10n', "/wp-admin/css/l10n$suffix.css" ); $styles->add( 'code-editor', "/wp-admin/css/code-editor$suffix.css", array( 'wp-codemirror' ) ); $styles->add( 'site-health', "/wp-admin/css/site-health$suffix.css" ); $styles->add( 'wp-admin', false, array( 'dashicons', 'common', 'forms', 'admin-menu', 'dashboard', 'list-tables', 'edit', 'revisions', 'media', 'themes', 'about', 'nav-menus', 'widgets', 'site-icon', 'l10n' ) ); $styles->add( 'login', "/wp-admin/css/login$suffix.css", array( 'dashicons', 'buttons', 'forms', 'l10n' ) ); $styles->add( 'install', "/wp-admin/css/install$suffix.css", array( 'dashicons', 'buttons', 'forms', 'l10n' ) ); $styles->add( 'wp-color-picker', "/wp-admin/css/color-picker$suffix.css" ); $styles->add( 'customize-controls', "/wp-admin/css/customize-controls$suffix.css", array( 'wp-admin', 'colors', 'imgareaselect' ) ); $styles->add( 'customize-widgets', "/wp-admin/css/customize-widgets$suffix.css", array( 'wp-admin', 'colors' ) ); $styles->add( 'customize-nav-menus', "/wp-admin/css/customize-nav-menus$suffix.css", array( 'wp-admin', 'colors' ) ); // Common dependencies. $styles->add( 'buttons', "/wp-includes/css/buttons$suffix.css" ); $styles->add( 'dashicons', "/wp-includes/css/dashicons$suffix.css" ); // Includes CSS. $styles->add( 'admin-bar', "/wp-includes/css/admin-bar$suffix.css", array( 'dashicons' ) ); $styles->add( 'wp-auth-check', "/wp-includes/css/wp-auth-check$suffix.css", array( 'dashicons' ) ); $styles->add( 'editor-buttons', "/wp-includes/css/editor$suffix.css", array( 'dashicons' ) ); $styles->add( 'media-views', "/wp-includes/css/media-views$suffix.css", array( 'buttons', 'dashicons', 'wp-mediaelement' ) ); $styles->add( 'wp-pointer', "/wp-includes/css/wp-pointer$suffix.css", array( 'dashicons' ) ); $styles->add( 'customize-preview', "/wp-includes/css/customize-preview$suffix.css", array( 'dashicons' ) ); $styles->add( 'wp-embed-template-ie', "/wp-includes/css/wp-embed-template-ie$suffix.css" ); $styles->add_data( 'wp-embed-template-ie', 'conditional', 'lte IE 8' ); // External libraries and friends. $styles->add( 'imgareaselect', '/wp-includes/js/imgareaselect/imgareaselect.css', array(), '0.9.8' ); $styles->add( 'wp-jquery-ui-dialog', "/wp-includes/css/jquery-ui-dialog$suffix.css", array( 'dashicons' ) ); $styles->add( 'mediaelement', '/wp-includes/js/mediaelement/mediaelementplayer-legacy.min.css', array(), '4.2.17' ); $styles->add( 'wp-mediaelement', "/wp-includes/js/mediaelement/wp-mediaelement$suffix.css", array( 'mediaelement' ) ); $styles->add( 'thickbox', '/wp-includes/js/thickbox/thickbox.css', array( 'dashicons' ) ); $styles->add( 'wp-codemirror', '/wp-includes/js/codemirror/codemirror.min.css', array(), '5.29.1-alpha-ee20357' ); // Deprecated CSS. $styles->add( 'deprecated-media', "/wp-admin/css/deprecated-media$suffix.css" ); $styles->add( 'farbtastic', "/wp-admin/css/farbtastic$suffix.css", array(), '1.3u1' ); $styles->add( 'jcrop', '/wp-includes/js/jcrop/jquery.Jcrop.min.css', array(), '0.9.15' ); $styles->add( 'colors-fresh', false, array( 'wp-admin', 'buttons' ) ); // Old handle. $styles->add( 'open-sans', $open_sans_font_url ); // No longer used in core as of 4.6. // Noto Serif is no longer used by core, but may be relied upon by themes and plugins. $fonts_url = ''; /* * translators: Use this to specify the proper Google Font name and variants * to load that is supported by your language. Do not translate. * Set to 'off' to disable loading. */ $font_family = _x( 'Noto Serif:400,400i,700,700i', 'Google Font Name and Variants' ); if ( 'off' !== $font_family ) { $fonts_url = 'https://fonts.googleapis.com/css?family=' . urlencode( $font_family ); } $styles->add( 'wp-editor-font', $fonts_url ); // No longer used in core as of 5.7. $block_library_theme_path = WPINC . "/css/dist/block-library/theme$suffix.css"; $styles->add( 'wp-block-library-theme', "/$block_library_theme_path" ); $styles->add_data( 'wp-block-library-theme', 'path', ABSPATH . $block_library_theme_path ); $styles->add( 'wp-reset-editor-styles', "/wp-includes/css/dist/block-library/reset$suffix.css", array( 'common', 'forms' ) // Make sure the reset is loaded after the default WP Admin styles. ); $styles->add( 'wp-editor-classic-layout-styles', "/wp-includes/css/dist/edit-post/classic$suffix.css", array() ); $wp_edit_blocks_dependencies = array( 'wp-components', 'wp-editor', // This need to be added before the block library styles, // The block library styles override the "reset" styles. 'wp-reset-editor-styles', 'wp-block-library', 'wp-reusable-blocks', ); // Only load the default layout and margin styles for themes without theme.json file. if ( ! WP_Theme_JSON_Resolver::theme_has_support() ) { $wp_edit_blocks_dependencies[] = 'wp-editor-classic-layout-styles'; } if ( ! is_array( $editor_styles ) || count( $editor_styles ) === 0 ) { // Include opinionated block styles if no $editor_styles are declared, so the editor never appears broken. $wp_edit_blocks_dependencies[] = 'wp-block-library-theme'; } $styles->add( 'wp-edit-blocks', "/wp-includes/css/dist/block-library/editor$suffix.css", $wp_edit_blocks_dependencies ); $package_styles = array( 'block-editor' => array( 'wp-components' ), 'block-library' => array(), 'block-directory' => array(), 'components' => array(), 'edit-post' => array( 'wp-components', 'wp-block-editor', 'wp-editor', 'wp-edit-blocks', 'wp-block-library', 'wp-nux', ), 'editor' => array( 'wp-components', 'wp-block-editor', 'wp-nux', 'wp-reusable-blocks', ), 'format-library' => array(), 'list-reusable-blocks' => array( 'wp-components' ), 'reusable-blocks' => array( 'wp-components' ), 'nux' => array( 'wp-components' ), 'widgets' => array( 'wp-components', ), 'edit-widgets' => array( 'wp-widgets', 'wp-block-editor', 'wp-edit-blocks', 'wp-block-library', 'wp-reusable-blocks', ), 'customize-widgets' => array( 'wp-widgets', 'wp-block-editor', 'wp-edit-blocks', 'wp-block-library', 'wp-reusable-blocks', ), 'edit-site' => array( 'wp-components', 'wp-block-editor', 'wp-edit-blocks', ), ); foreach ( $package_styles as $package => $dependencies ) { $handle = 'wp-' . $package; $path = "/wp-includes/css/dist/$package/style$suffix.css"; if ( 'block-library' === $package && wp_should_load_separate_core_block_assets() ) { $path = "/wp-includes/css/dist/$package/common$suffix.css"; } $styles->add( $handle, $path, $dependencies ); $styles->add_data( $handle, 'path', ABSPATH . $path ); } // RTL CSS. $rtl_styles = array( // Admin CSS. 'common', 'forms', 'admin-menu', 'dashboard', 'list-tables', 'edit', 'revisions', 'media', 'themes', 'about', 'nav-menus', 'widgets', 'site-icon', 'l10n', 'install', 'wp-color-picker', 'customize-controls', 'customize-widgets', 'customize-nav-menus', 'customize-preview', 'login', 'site-health', // Includes CSS. 'buttons', 'admin-bar', 'wp-auth-check', 'editor-buttons', 'media-views', 'wp-pointer', 'wp-jquery-ui-dialog', // Package styles. 'wp-reset-editor-styles', 'wp-editor-classic-layout-styles', 'wp-block-library-theme', 'wp-edit-blocks', 'wp-block-editor', 'wp-block-library', 'wp-block-directory', 'wp-components', 'wp-customize-widgets', 'wp-edit-post', 'wp-edit-site', 'wp-edit-widgets', 'wp-editor', 'wp-format-library', 'wp-list-reusable-blocks', 'wp-reusable-blocks', 'wp-nux', 'wp-widgets', // Deprecated CSS. 'deprecated-media', 'farbtastic', ); foreach ( $rtl_styles as $rtl_style ) { $styles->add_data( $rtl_style, 'rtl', 'replace' ); if ( $suffix ) { $styles->add_data( $rtl_style, 'suffix', $suffix ); } } }
要使用` get_users
`函数获取所有用户列表,可以按照以下步骤进行:
1. 使用` get_users
`函数调用获取用户列表:
$users = get_users();
2. 您可以按需使用参数来过滤结果。例如,您可以通过角色、用户ID、用户登录名等过滤用户列表。以下是一个根据用户角色为过滤条件的示例:
$users = get_users( array( 'role' => 'subscriber' // 将角色名称替换为您要过滤的角色 ) );
在上述示例中,将` role
`参数设置为所需的角色名称来过滤用户列表。
3. 您可以使用循环遍历获取的用户列表,并访问每个用户的属性。例如,以下示例将显示每个用户的用户名和电子邮件地址:
foreach( $users as $user ) { echo '用户名:' . $user->user_login . ', 电子邮件:' . $user->user_email . ; }
在上述示例中,通过` $user->user_login
`和` $user->user_email
`访问每个用户的用户名和电子邮件地址。
请注意,` get_users
`函数默认返回所有用户,并可以根据需要使用更多参数进行过滤。您可以参阅WordPress官方文档中的` get_users
`函数文档,了解更多可用参数和用法示例。
总结起来,使用` get_users
`函数获取所有用户列表的步骤是:
get_users
`函数获取用户列表。在WordPress中,可以使用WP_PLUGIN_DIR和WP_PLUGIN_URL常量来定义插件的目录路径和URL。
1. `WP_PLUGIN_DIR`:这是一个常量,用于定义插件的目录路径(文件系统路径)。您可以使用以下代码在插件文件中访问该常量:
$plugin_dir = WP_PLUGIN_DIR . '/your-plugin-folder/';
在上述代码中,将"your-plugin-folder"替换为您插件的实际文件夹名称。使用该常量,您可以获取插件文件的完整路径。
2. `WP_PLUGIN_URL`:这是一个常量,用于定义插件的URL(用于在网页上访问插件文件)。以下是一个使用该常量的示例:
$plugin_url = WP_PLUGIN_URL . '/your-plugin-folder/';
同样,请将"your-plugin-folder"替换为您插件的实际文件夹名称。使用该常量,您可以获取插件在网页上的完整URL。
请注意,`WP_PLUGIN_DIR`和`WP_PLUGIN_URL`常量在WordPress版本2.6之后引入。从WordPress 5.5版本开始,这两个常量被标记为过时(deprecated),因为WordPress更倾向于使用新的插件文件结构。如果您正在开发新插件,建议使用新的插件文件结构和相关函数。
在新的插件文件结构中,可以使用以下函数来获取插件的目录路径和URL:
- `plugin_dir_path()`:获取插件目录路径。
- `plugin_dir_url()`:获取插件URL。
这些函数会自动将插件的版本、多站点和SSL等考虑因素纳入计算。
总结起来,使用`WP_PLUGIN_DIR`和`WP_PLUGIN_URL`常量定义插件的目录和URL的方法是:
$plugin_dir = WP_PLUGIN_DIR . '/your-plugin-folder/'; $plugin_url = WP_PLUGIN_URL . '/your-plugin-folder/';
但请注意,这两个常量已被标记为过时,建议使用新的插件文件结构和相关函数来获取插件的路径和URL。
使用PHP在WordPress中添加自定义功能可以通过以下方式实现:
下面是一个实操示例。
要在WordPress中添加自定义功能,可以按照以下步骤使用PHP编写并添加自定义功能:
// 添加自定义功能示例 // 1. 创建自定义短代码 function custom_shortcode() { return '这是我的自定义短代码内容'; } add_shortcode('custom', 'custom_shortcode'); // 2. 自定义小工具 function custom_widget() { echo '这是我的自定义小工具内容'; } register_widget('custom_widget'); // 3. 自定义菜单 function custom_menu() { register_nav_menu('custom-menu', '自定义菜单'); } add_action('after_setup_theme', 'custom_menu'); // 4. 自定义页面模板 function custom_page_template() { /* Template Name: 自定义模板 */ // 自定义模板的内容和样式 }
请注意,修改主题文件可以在主题更新时丢失,因此建议在进行任何更改之前备份functions.php文件。此外,为避免不必要的错误和冲突,建议在添加自定义功能前先了解WordPress开发文档和最佳实践,以确保正确、安全地实现所需的自定义功能。
使用 do_action
函数可以触发一个钩子函数。do_action
函数的参数与要触发的钩子函数的参数相同。
例如,触发save_post钩子函数的代码如下:
do_action( 'save_post', $post_ID, $post );
这里,$post_ID
和 $post
是传递给钩子函数的参数。
使用 wp_get_current_user
获取当前登录用户的信息:
$current_user = wp_get_current_user(); // 获取当前用户的ID $user_id = $current_user->ID; // 获取当前用户的用户名 $user_login = $current_user->user_login; // 获取当前用户的邮箱 $user_email = $current_user->user_email; // 获取当前用户的显示名称 $display_name = $current_user->display_name;