[PHP] 讀檔編碼問題

mb_convert_encoding

string mb_convert_encoding ( string $str , string $to_encoding [, mixed $from_encoding = mb_internal_encoding() ] )

$str，要轉換編碼文字

$to_encoding ，要轉成的編碼，如utf-8,big5，大小寫均可
$from，原始讀出來的編碼，如UTF-8,BIG5，大小寫均可

mb_convert_encoding($str, "UTF-8"); //編碼轉換為utf-8
mb_convert_encoding($str, "UTF-8", "BIG5"); //原始編碼為BIG5轉UTF-8
mb_convert_encoding($str, "UTF-8", "auto"); //原始編碼不明，通過auto自動檢測，轉換UTF-8