Show empty stars onwards (CSSIgniter response)

gistfile1.txt

//Display the rating on a submitted comment.
add_filter( 'comment_text', 'ci_comment_rating_display_rating' );
function ci_comment_rating_display_rating( $comment_text ) {

	if ( $rating = get_comment_meta( get_comment_ID(), 'rating', true ) ) {
		$stars = '<p class="stars">';
		for ( $i = 1; $i <= 5 ; $i ++ ) {
			if ( $i <= $rating ) {
				$stars .= '<span class="dashicons dashicons-star-filled"></span>';
			} else {
				$stars .= '<span class="dashicons dashicons-star-empty"></span>';
			}
		}
		$stars        .= '</p>';
		$comment_text = $comment_text . $stars;

		return $comment_text;
	} else {
		return $comment_text;
	}
}

This is a cool solution. Please tell me how to do that if the average rating is, for example, 4.5, the fifth star is displayed by half.

The initial & updated post about this, you can find here

It also includes the half star rating.