fwrite() and UTF8

Question

I am creating a file using php fwrite() and I know all my data is in UTF8 ( I have done extensive testing on this - when saving data to db and outputting on normal webpage a

Answer 1

$handle = fopen($file,"w");
fwrite($handle, pack("CCC",0xef,0xbb,0xbf));
fwrite($handle,$file); 
fclose($handle);