wp_register_style( string $handle, string|bool $src, string[] $deps = array(), string|bool|null $ver = false, string $media = ‘all’ )

注册CSS样式表。
Register a CSS stylesheet.

另请参见#另请参阅WP_Dependencies:：add（）

**
 * Register a CSS stylesheet.
 *
 * @see WP_Dependencies::add()
 * @link http://www.w3.org/TR/CSS2/media.html#media-types List of CSS media types.
 *
 * @since 2.6.0
 * @since 4.3.0 A return value was added.
 *
 * @param string      $handle Name of the stylesheet.
 * @param string|bool $src    Path to the stylesheet from the WordPress root directory. Example: '/css/mystyle.css'.
 * @param array       $deps   An array of registered style handles this stylesheet depends on. Default empty array.
 * @param string|bool $ver    String specifying the stylesheet version number. Used to ensure that the correct version
 *                            is sent to the client regardless of caching. Default 'false'. Accepts 'false', 'null', or 'string'.
 * @param string      $media  Optional. The media for which this stylesheet has been defined.
 *                            Default 'all'. Accepts 'all', 'aural', 'braille', 'handheld', 'projection', 'print',
 *                            'screen', 'tty', or 'tv'.
 * @return bool Whether the style has been registered. True on success, false on failure.
 */
function wp_register_style( $handle, $src, $deps = array(), $ver = false, $media = 'all' ) {
    _wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );
 
    return wp_styles()->add( $handle, $src, $deps, $ver, $media );
}