复制代码 代码如下:

private function getfirstchar($s0){
        $s=iconv(\'UTF-8\',\'gb2312\', $s0);
        if (ord($s0)>128) { //汉字开头
            $asc=ord($s{0})*256+ord($s{1})-65536;
            if($asc>=-20319 and $asc<=-20284)return \"A\";
            if($asc>=-20283 and $asc<=-19776)return \"B\";
            if($asc>=-19775 and $asc<=-19219)return \"C\";
            if($asc>=-19218 and $asc<=-18711)return \"D\";
            if($asc>=-18710 and $asc<=-18527)return \"E\";
            if($asc>=-18526 and $asc<=-18240)return \"F\";
            if($asc>=-18239 and $asc<=-17923)return \"G\";
            if($asc>=-17922 and $asc<=-17418)return \"I\";             
            if($asc>=-17417 and $asc<=-16475)return \"J\";             
            if($asc>=-16474 and $asc<=-16213)return \"K\";             
            if($asc>=-16212 and $asc<=-15641)return \"L\";             
            if($asc>=-15640 and $asc<=-15166)return \"M\";             
            if($asc>=-15165 and $asc<=-14923)return \"N\";             
            if($asc>=-14922 and $asc<=-14915)return \"O\";             
            if($asc>=-14914 and $asc<=-14631)return \"P\";             
            if($asc>=-14630 and $asc<=-14150)return \"Q\";             
            if($asc>=-14149 and $asc<=-14091)return \"R\";             
            if($asc>=-14090 and $asc<=-13319)return \"S\";             
            if($asc>=-13318 and $asc<=-12839)return \"T\";             
            if($asc>=-12838 and $asc<=-12557)return \"W\";             
            if($asc>=-12556 and $asc<=-11848)return \"X\";             
            if($asc>=-11847 and $asc<=-11056)return \"Y\";             
            if($asc>=-11055 and $asc<=-10247)return \"Z\"; 
        }else if(ord($s)>=48 and ord($s)<=57){ //数字开头
            switch(iconv_substr($s,0,1,\'utf-8\'))
            {
                case 1:return \"Y\";
                case 2:return \"E\";
                case 3:return \"S\";
                case 4:return \"S\";
                case 5:return \"W\";
                case 6:return \"L\";
                case 7:return \"Q\";
                case 8:return \"B\";
                case 9:return \"J\";
                case 0:return \"L\";
            }               
        }else if(ord($s)>=65 and ord($s)<=90){ //大写英文开头
            return substr($s,0,1);
        }else if(ord($s)>=97 and ord($s)<=122){ //小写英文开头
            return strtoupper(substr($s,0,1));
        }
        else
        {
            return iconv_substr($s0,0,1,\'utf-8\');//中英混合的词语，不适合上面的各种情况，因此直接提取首个字符即可
        }

    }