使用url重写后，base64编码给我带来了奇怪的结果

Question

I have a really strange problem

ok the problem is thus

let say I have this url

http://www.example.com/?file=WFS010C.part3.rar&url=http://www.fileserve.com/file/vEpByp3/WFS010C.part3.rar

If I do base64_encode($_GET['url'])

the results is this

aHR0cDovL3d3dy5maWxlc2VydmUuY29tL2ZpbGUvdkVwQnlwMy9XRlMwMTBDLnBhcnQzLnJhcg==

after applying this rewrite condition

RewriteEngine On
RewriteBase /
RewriteRule ^file-(.*)-(.*)\.html$ index.php?file=$1&url=$2

The url is like this

http://www.example.com/file-WFS010C.part3.rar-http://www.fileserve.com/file/vEpByp3/WFS010C.part3.rar.html

now if I do base64_encode($_GET['url'])

the results is this

aHR0cDovd3d3LmZpbGVzZXJ2ZS5jb20vZmlsZS92RXBCeXAzL1dGUzAxMEMucGFydDMucmFy

**Note that the value of $_GET['url'] is exactly the same in both cases if printed without encoding!!!!

how come same string giving different results just after using rewrite ?**

Does anyone know whats the problem

Answer 1

You can use base64_decode to see whether they are same.

In fact:

The first one is http://www.fileserve.com/file/vEpByp3/WFS010C.part3.rar

And the second one is http:/www.fileserve.com/file/vEpByp3/WFS010C.part3.rar

You can see, they are not same.