Pass complex URL as parameter in PHP

I'm trying to pass a complex URL as a url parameter but the problem occurs if the url contains & for example I want to pass the following link as a parameter

http://www.google.ps/search?hl=en&client=firefox-a&hs=42F&rls=org.mozilla%3Aen-US%3Aofficial&q=The+type+%27Microsoft.Practices.ObjectBuilder.Locator%27+is+defined+in+an+assembly+that+is+not+referenced.+You+must+add+a+reference+to+assembly+&aq=f&aqi=&aql=&oq=

I'm trying to get a URL as a parameter from a user and redirect user to this URL.

How could I handle this in PHP?

The whole Story:

I'm trying to make some ads analytics on flash files so user submit flash ads to a website which contains a link to the required webpage.

Now,my client needs to know how many times this flash file was clicked.To solve this I 'll till every one who submits flash to write a link to my client webpage and pass the required URL as a parameter as follows

http://myclientwebpage.com/disp.php?link=www.google.com&id=16

by this way I can update my database and get a count for how many times this link was clicked