php如果將utf-8碼對應的漢字顯示出來

這是我寫的Unicode碼產生UTF-8對應的碼值

//3位元組 1110xxxx 10xxxxxx 10xxxxxx $unicode = '\u611f'; //中文感Unicodefunction unicode_utf8($unicode){    $decval = intval(hexdec($unicode));    $left = dechex( 0xe0 | ($decval >> 12));    $mid  = dechex( 0x80 | (($decval >> 6) & 0x3f));    $right= dechex( 0x80 |  ($decval & 0x3f));    return $left.$mid.$right;}echo $utf8 = unicode_utf8($unicode);echo "\n";

?>

輸出：e6849f
問題是如何把UTF-8碼 e6849f 對應的漢字'感'顯示出來？？

回複內容：

這是我寫的Unicode碼產生UTF-8對應的碼值

//3位元組 1110xxxx 10xxxxxx 10xxxxxx $unicode = '\u611f'; //中文感Unicodefunction unicode_utf8($unicode){    $decval = intval(hexdec($unicode));    $left = dechex( 0xe0 | ($decval >> 12));    $mid  = dechex( 0x80 | (($decval >> 6) & 0x3f));    $right= dechex( 0x80 |  ($decval & 0x3f));    return $left.$mid.$right;}echo $utf8 = unicode_utf8($unicode);echo "\n";

?>

輸出：e6849f
問題是如何把UTF-8碼 e6849f 對應的漢字'感'顯示出來？？

$unicode = '\u611f'; //中文感Unicode// Unicode轉換utf8函數function unicode_to_utf8($unicode) {    $utf8_str = '';    $code = intval(hexdec($unicode));    //這裡注意轉換出來的code一定得是整形，這樣才會正確的按位操作    $ord_1 = decbin(0xe0 | ($code >> 12));    $ord_2 = decbin(0x80 | (($code >> 6) & 0x3f));    $ord_3 = decbin(0x80 | ($code & 0x3f));    $utf8_str = chr(bindec($ord_1)) . chr(bindec($ord_2)) . chr(bindec($ord_3));    return $utf8_str;}echo unicode_to_utf8($unicode);?>

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