PLEASE HELP UNICODE WATERMARKING IN CODEIGNITER

[eluser]QUYET[/eluser]
[quote author="ivantcholakov" date="1389804655"]Tell me, what CodeIgniter version do you use.[/quote]
I am using CodeIgniter 2.1.4

[eluser]QUYET[/eluser]
Thanks guys,

I works only on Linux server. I did many tries on my local machine(Windows) and failed. I tried to upload to Linux server and it works. Don't know why .
Thank you very much.
I am very much appreciated.

[eluser]ivantcholakov[/eluser]
OK, the subject is closed for me.