Parsing after (&) in url

[ridesign1]

I am creating a redirect script
I have the 2 variables "m" and "b"

and I want to echo that whole url after b= including the bit after "&"

visit: http://www.newdesignworld.com/link.php?m=1&b=http://www.newdesignworld.com/today&=c

I am echoing the variable $b but it is only showing http://www.newdesignworld.com/today
but i want it to show: http://www.newdesignworld.com/today&=c

is this possible?

thanks

 

[monaco]

You may need to escape it using it's hex equivalent to avoid it being treated as a GET params separator.

 

[ridesign1]

You may need to escape it using it's hex equivalent to avoid it being treated as a GET params separator.

thanks for your reply.
could you give me an example, as I am new to php

thanks