Php怎么算这个？

Question

我有likes variable和dislikes variable，我应该如何将其更改为0到5的等级？

示例：

1. 0 Likes - 0 Dislikes = 0评分
2. 1 Likes - 0 Dislikes = 5评级
3. 5 Likes - 5 Dislikes = 2.5评分

非常感谢...

Answer 1

5 *喜欢/（喜欢+不喜欢）

UPD：从评论中添加以保留格式：

if dislikes is 0:
    if likes is 0:
        0
    else:
        5
else:
    5 * likes / (likes + dislikes)