Best light weight PHP editor working under UTF-8 without BOM

My webpage is not working under ASCI . It shows plan text instead of links . By hexa editor i found some un used characters that blocking the program. To work that i need to change the encoding to utf-8 without bom . I am using notepad++ .When i close the notepad++ program and open it ,it default set to ASCI.This cause so many issues.
Is there ny editor to work under utf-8 without bom.