这是一个将汉字转换成Unicode编码的PHP函数，支持GBK和UTF8编码。
function uni_decode ($uncode)
{
$word = json_decode(preg_replace_callback('/&#(\d{5});/', create_function('$dec', 'return \'\\u\'.dechex($dec[1]);'), '"'.$uncode.'"'));
return $word;
}
对 Unicode 转换为汉字
function uni_decode ($uncode)
{
$word = json_decode(preg_replace_callback('/&#(\d{5});/', create_function('$dec', 'return \'\\u\'.dechex($dec[1]);'), '"'.$uncode.'"'));
return $word;
}
以下示例演示：
function uni_encode ($word)
{
$word0 = iconv('gbk', 'utf-8', $word);
$word1 = iconv('utf-8', 'gbk', $word0);
$word = ($word1 == $word) ? $word0 : $word;
$word = json_encode($word);
$word = preg_replace_callback('/\\\\u(\w{4})/', create_function('$hex', 'return \'&#\'.hexdec($hex[1]).\';\';'), substr($word, 1, strlen($word)-2));
return $word;
}
$word = '将朱祖松和霍涛转为 Unicode 四字节编码！ ';
echo uni_encode($word);
上述将输出如下结果：

将朱祖松和霍涛转为 Unicode 四字节编码！

本文链接http://www.cxybl.com/html/wlbc/Php/20130326/37396.html