$fchar = ord($s0{0}); //è·åå符串ç第ä¸ä¸ªåè
//å¤ææ¯ä¸æ¯è±æå符,å¦ææ¯åç´æ¥è¿å该åæ¯å¤§å
if ($fchar >= ord(âAâ) and $fchar <= ord(âzâ))return strtoupper($s0{0});
//以ä¸ä»£ç ç¨å符ç¼ç 转æ¢å½æ°ï¼éè¿ä¸¤ç§å符éç¼ç 转æ¢ç对æ¯ï¼å¤æå符串æ¯åªç§å符é
//æç»åå符串为GBå符é
$s1 = @iconv(âUTF-8â³, âGBKâ, $s0);
$s2 = @iconv(âGBKâ, âUTF-8â³, $s1);
if ($s2 == $s0) {
$s = $s1;
} else {
$s = $s0;
}
//计ç®ç»åºçå符串çå两个åèå
ç ï¼ç¶ååæ ¹æ®ç»æå¤æå¨GBå符éä¸çä½ç½®ï¼ä»èæ ¹æ®ä½ç½®ä¸æ¼é³çå
³ç³»ï¼æç»å¾åºæ¼é³åæ¯
$asc = ord($s{0}) * 256 + ord($s{1}) â 65536;
âUâãâVâ对ä¸ææ æï¼ä»¥ä¸æ¯å¯¹ãH æ¼é³ç计ç®ï¼
if($asc>=-17922 and $asc<=-17418)return "H";
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