I have two types of URL and want to rewrite it for friendly URL.

**1. The first:**

    https://example.com/folder/myfile.php?id=xx&param1=yy

I want to rewrite to:

    https://example.com/folder/myfile/xx/yy


**2. The second:**

    https://example.com/another-folder/myfile.php?id=xx&param1=yy

I want it rewrite to:

    https://example.com/myfile/xx/yy

Please help me how to do it. I've searched Google but I do not understand the principle rewrite.