非常苦悶地發現，原來一直困擾的HKSCS問題PHP一直也支持。只不過名稱不叫HK-SCS，叫BIG5-HKSCS。
以下是HK增補字符集的解決方案：
HTML頁面設為UTF－8,
寫入數據庫前先：iconv('big5-hkscs','utf8', $string)
需轉為UNICODE就用以下函數
function String2Unicode($data, $language)
{
$data = nl2br(trim($data));
$data = str_replace('
',chr(13),$data);
$str = '';
preg_match_all("/[\x80-\xff]?./",$data,$ar);
debug($ar);
foreach($ar[0] as $v)
{
if($v != '' && $v!=chr(13))
{
$str .= "".utf82unicode(iconv($language,"UTF-8",$v)).";";
}else {
$str .=$v;
}
}
return $str;
}
function utf82unicode($c) {
switch(strlen($c)) {
case 1:
return ord($c);
case 2:
$n = (ord($c[0]) & 0x3f) $n += ord($c[1]) & 0x3f;
return $n;
case 3:
$n = (ord($c[0]) & 0x1f) $n += (ord($c[1]) & 0x3f) $n += ord($c[2]) & 0x3f;
return $n;
case 4:
$n = (ord($c[0]) & 0x0f) $n += (ord($c[1]) & 0x3f) $n += (ord($c[2]) & 0x3f) $n += ord($c[3]) & 0x3f;
return $n;
}
}
