中文用户按姓排列

public function memberlist(){$group_chat_id = input('group_chat_id/d');if(!$group_chat_id){$this->error('缺少参数');}$member['gm.group_chat_id'] = $group_chat_id;$key = input('key/s');if($key){$member['u.nickname|gm.nickname'] = ['like','%'.$key.'%'];}$memberlist = Db::name('group_member')->alias('gm')->field('u.id,u.nickname,u.avatar,gm.nickname as gmname,gm.is_speech,gm.speech_sec')->Join('user u','u.id = gm.user_id','left')->where($member)->select();$namearray = [];if($memberlist){foreach($memberlist as $name){$char = $this->getFirstChar($name['gmname']);$charArray[$char][] = $name;}ksort($charArray);foreach ($charArray as $k=>$v){$namearray[$k]['name'] = $v;$namearray[$k]['count'] = count($v);}}$this->success('查询成功',$namearray);}private function getFirstChar($s){$s0 = mb_substr($s,0,3); //获取名字的姓$s = iconv('UTF-8','gb2312', $s0); //将UTF-8转换成GB2312编码if (ord($s0)>128) { //汉字开头，汉字没有以U、V开头的$asc=ord($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 $asc<=-17760)return "G";if($asc>=-17759 and $asc<=-17248)return "H";if($asc>=-17247 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}}

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