wp_get_active_and_valid_themes(): string[]

Source

function wp_get_active_and_valid_themes() {
	global $pagenow, $wp_stylesheet_path, $wp_template_path;

	$themes = array();

	if ( wp_installing() && 'wp-activate.php' !== $pagenow ) {
		return $themes;
	}

	if ( is_child_theme() ) {
		$themes[] = $wp_stylesheet_path;
	}

	$themes[] = $wp_template_path;

	/*
	 * Remove themes from the list of active themes when we're on an endpoint
	 * that should be protected against WSODs and the theme is paused.
	 */
	if ( wp_is_recovery_mode() ) {
		$themes = wp_skip_paused_themes( $themes );

		// If no active and valid themes exist, skip loading themes.
		if ( empty( $themes ) ) {
			add_filter( 'wp_using_themes', '__return_false' );
		}
	}

	return $themes;
}

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