memo

function gutenberg_get_block_core_avatar_border_attributes( $attributes ) {
	$border_styles = array();
	$sides         = array( 'top', 'right', 'bottom', 'left' );

	// Border radius.
	if ( isset( $attributes['style']['border']['radius'] ) ) {
		$border_styles['radius'] = $attributes['style']['border']['radius'];
	}

	// Border style.
	if ( isset( $attributes['style']['border']['style'] ) ) {
		$border_styles['style'] = $attributes['style']['border']['style'];
	}

	// Border width.
	if ( isset( $attributes['style']['border']['width'] ) ) {
		$border_styles['width'] = $attributes['style']['border']['width'];
	}

	// Border color.
	$preset_color           = array_key_exists( 'borderColor', $attributes ) ? "var:preset|color|{$attributes['borderColor']}" : null;
	$custom_color           = _wp_array_get( $attributes, array( 'style', 'border', 'color' ), null );
	$border_styles['color'] = $preset_color ? $preset_color : $custom_color;

	// Individual border styles e.g. top, left etc.
	foreach ( $sides as $side ) {
		$border                 = _wp_array_get( $attributes, array( 'style', 'border', $side ), null );
		$border_styles[ $side ] = array(
			'color' => isset( $border['color'] ) ? $border['color'] : null,
			'style' => isset( $border['style'] ) ? $border['style'] : null,
			'width' => isset( $border['width'] ) ? $border['width'] : null,
		);
	}

	$styles     = gutenberg_style_engine_get_styles( array( 'border' => $border_styles ) );
	$attributes = array();
	if ( ! empty( $styles['classnames'] ) ) {
		$attributes['class'] = $styles['classnames'];
	}
	if ( ! empty( $styles['css'] ) ) {
		$attributes['style'] = $styles['css'];
	}
	return $attributes;
}