URL as URL's get parameters - problem with “&”

Question

There is script that receives another url as GET parameter:

script.php?file=http://www.google.com&id=123

The problem is:
when url has p

Answer 1

You need to URL encode the entire URL that you are passing as a parameter to another url (your script). %26 is the correct encoding for an &. Just make sure you decode it server-side before using it. You don't say what language(s) you're using, but most, inc javascript and php have native URL encoding functions.