You aren't changing it. You are representing it in a URL.
In morse code the data "s" is represented as "...".
In URLs, the data "&" is represented as "%26"
Edit: Having reread the grandparent I now see I'm being stupid. The grandparent is good style advice, but sometimes changing things after the fact is a little difficult - especially on a short time scale. You can encode the names as well as the values of parameters though.
In reply to Re^3: & url question
by dorward
in thread & url question
by Anonymous Monk
| For: | Use: | ||
| & | & | ||
| < | < | ||
| > | > | ||
| [ | [ | ||
| ] | ] |