How to convert to unicode (UTF-8) the follow string?

[eluser]cavi1905[/eluser]
Hello everybody,

I have a problem about unicode. I need a function PHP to convert the string

Code:

"Ca sĩ: Cẩm Ly"

to "Ca sĩ: Cẩm Ly" (It's vietnamese).

Can everybody help me...? Please!

Thanks!

[eluser]pistolPete[/eluser]
Have a look at html_entity_decode().

[eluser]verynewtothis[/eluser]
utf8_decode

[eluser]cavi1905[/eluser]
I'd try to use that functions, but the problem isn't still resolved... Other way? Thanks!

[eluser]pistolPete[/eluser]
[quote author="cavi1905" date="1251374550"]... but the problem isn't still resolved...[/quote]
Why don't you describe the error you are facing? What's the output if you use html_entity_decode() ?
Did you enable UTF-8 output correctly? Read http://ellislab.com/forums/viewthread/126518/