Encoding useragent

PHP
1

What can be used to encode a user agent to make:

Mozilla/5.0%20%28Windows;%20U;%20Windows%20NT%205.1;%20en-US;%20rv:1.9.2.13%29%20Gecko/20101203%20Firefox/3.6.13

Rather than:

$ua = urlencode($_SERVER['HTTP_USER_AGENT']);

Which gives this format:

Mozilla%2F5.0+%28Windows%3B+U%3B+Windows+NT+5.1%3B+en-US%3B+rv%3A1.9.2.13%29+Gecko%2F20101203+Firefox%2F3.6.13

Must a function be written?

2

Would rawurlencode do what you are after?

Have you got the original USER AGENT you are using?

3

Actually I’ve come up with this, which seems to at least given a matching string.

$ua2 = "$ua";
$ua2 = str_replace('%2F', '/', $ua2);
$ua2 = str_replace('%3B',';',$ua2);
$ua2 = str_replace('%3A', ':', $ua2);
$ua2 = str_replace('+' , '%20' , $ua2);

But the reason I am doing this, is for a SimplePie feed (believe there is no more support there).

And to my utter amazement, even when the output of a test string exactly matches one that is character entered (which succeeds), the request fails.

Given what I am faced with, which does not make sense, I don’t know if there is anything else I can do with this.

4

Would rawurlencode do what you are after?
Comes up with something different.

5

Ok, have you the original string used for the encode?

6

Looks like:

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13

7

sorry for the double post but the system would not allow an edit, and this may save some time:

I’ve recompared and the start and end brackets were omitted, but the request is still not cooperating. Gone over char per char.

$ua2 = “$ua”;
$ua2 = str_replace(‘%2F’, ‘/’, $ua2);
$ua2 = str_replace(‘%3B’,‘;’,$ua2);
$ua2 = str_replace(‘%3A’, ‘:’, $ua2);
$ua2 = str_replace(‘+’ , ‘%20’ , $ua2);
$ua2 = str_replace(‘(’ , ‘%28’ , $ua2);
$ua2 = str_replace(‘)’ , ‘%29’ , $ua2);