wp_enqueue_global_styles() WordPress Function

function wp_enqueue_global_styles() {
	$separate_assets  = wp_should_load_separate_core_block_assets();
	$is_block_theme   = wp_is_block_theme();
	$is_classic_theme = ! $is_block_theme;

	/*
	 * Global styles should be printed in the head when loading all styles combined.
	 * The footer should only be used to print global styles for classic themes with separate core assets enabled.
	 *
	 * See https://core.trac.wordpress.org/ticket/53494.
	 */
	if (
		( $is_block_theme && doing_action( 'wp_footer' ) ) ||
		( $is_classic_theme && doing_action( 'wp_footer' ) && ! $separate_assets ) ||
		( $is_classic_theme && doing_action( 'wp_enqueue_scripts' ) && $separate_assets )
	) {
		return;
	}

	$stylesheet = wp_get_global_stylesheet();

	if ( empty( $stylesheet ) ) {
		return;
	}

	wp_register_style( 'global-styles', false, array(), true, true );
	wp_add_inline_style( 'global-styles', $stylesheet );
	wp_enqueue_style( 'global-styles' );
}
Uses	Description
wp-includes/global-styles-and-settings.php:wp_get_global_stylesheet()	Returns the stylesheet resulting of merging core, theme, and user data.
wp-includes/theme.php:wp_is_block_theme()	Returns whether the active theme is a block-based theme or not.
wp-includes/script-loader.php:wp_should_load_separate_core_block_assets()	Checks whether separate styles should be loaded for core blocks on-render.
wp-includes/functions.wp-styles.php:wp_register_style()	Register a CSS stylesheet.
wp-includes/functions.wp-styles.php:wp_add_inline_style()	Add extra CSS styles to a registered stylesheet.
wp-includes/functions.wp-styles.php:wp_enqueue_style()	Enqueue a CSS stylesheet.
wp-includes/plugin.php:doing_action()	Returns whether or not an action hook is currently being processed.