[PHP] URL Encode

[David Smith]

I know this have been covered before but I can't find it in my thousands of emails... 
How would I URL Encode the following...


I am retrieving a variable like <? echo "$SearchCity"; ?> but for example if it is 
Hilton Head Island I need it to add the + signs as Hilton+Head+Island so Netscape 
won't crash.

Thanks...