<?php get_theme_mod() ?>

$name

(string) (必填) 自定义选项的名称.

默认值: None

$default

(boolean|string) (可选)

默认值: false

示例：

.footer {
     border-top: solid 1px #<?php echo get_theme_mod( 'background_color' ); ?>;
}

源文件：

/**
 * Retrieve theme modification value for the current theme.
 *
 * If the modification name does not exist, then the $default will be passed
 * through {@link http://php.net/sprintf sprintf()} PHP function with the first
 * string the template directory URI and the second string the stylesheet
 * directory URI.
 *
 * @since 2.1.0
 *
 * @param string      $name    Theme modification name.
 * @param bool|string $default
 * @return string
 */
function get_theme_mod( $name, $default = false ) {
	$mods = get_theme_mods();

	if ( isset( $mods[$name] ) ) {
		/**
		 * Filter the theme modification, or 'theme_mod', value.
		 *
		 * The dynamic portion of the hook name, `$name`, refers to
		 * the key name of the modification array. For example,
		 * 'header_textcolor', 'header_image', and so on depending
		 * on the theme options.
		 *
		 * @since 2.2.0
		 *
		 * @param string $current_mod The value of the current theme modification.
		 */
		return apply_filters( "theme_mod_{$name}", $mods[$name] );
	}

	if ( is_string( $default ) )
		$default = sprintf( $default, get_template_directory_uri(), get_stylesheet_directory_uri() );

	/** This filter is documented in wp-includes/theme.php */
	return apply_filters( "theme_mod_{$name}", $default );
}