PHP: is urlencode() a safe way to allow valid UTF-8 strings in the URL?

[danmcfly78]

I have user submitted tags that can be any type of (valid) UTF-8 string. I want to know if it is safe to include them in the URL merly by running them through \[code\]urlencode()\[/code\].In other words, is urlencode() safe to use for valid UTF-8 strings?(by valid I mean id have already force-encoded them to UTF-8)