Problem with date formatting
I don't know really why but I have a solution for you 
first put you result in a variable, ( try you result something like this Y/n/j )
then exclude variable by / and finally use your character.

$temp=date('Y/n/j');
list($y,$n,$j)=exclude('\/',$temp);
$final="$y\年 $n\月 $j\日";


I hope be useful for you. :)