织梦获得首字母方法,并如何实现文章列表按首字母归类

if (ord($row['title'])>128) { //汉字开头 
 $letter=getfirstchar2($row['title']); 
}else if(ord($row['title'])>=48 and ord($row['title'])<=57){ //数字开头 
$letter=iconv_substr($title,0,1,'utf-8'); 
}
else if(ord($row['title'])>=65 and ord($row['title'])<=90){ //大写英文开头 
$letter=iconv_substr($row['title'],0,1,'utf-8'); 
}else if(ord($row['title'])>=97 and ord($row['title'])<=122){ //小写英文开头 
$letter=iconv_substr($row['title'],0,1,'utf-8'); 
$letter=strtoupper($letter);//字母转换成大写 
} 
print_r($letter);exit; 
 function getfirstchar2($s0){ 
$s=iconv("UTF-8","gb2312", $s0);  
$asc=ord($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 $asc<=-17418)return "H";  
if($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";  
return false;  
}

<div class="container padding-big"style="min-height:200px;"> 
<p>{dede:type }[field:typename/]{/dede:type}</p> 
<div> 
{dede:php}  
$sql = "select arc.id,arc.writer,arc.typeid, arc.title, arc.senddate,tp.sitepath,tp.namerule,tp.typedir from dede_archives  arc  left join `dede_arctype` tp on arc.typeid=tp.id where arc.typeid=2"; 
 $dsql->SetQuery($sql); 
$dsql->Execute();//执行SQL操作 
while($row = $dsql->GetArray()){ 
//print_r($row['title']);exit; 
//$pingyin=GetPinyin($row['title'],0,1); 
$letter=substr(GetPinyin($row['title']),0,1);//取得拼音首字母 
$letter=strtoupper($letter); 
  
$arr[$letter]['writer'][]=$row["writer"]; 
$arr[$letter]['url'][]=GetFileUrl($row['id'],$row['typeid'],$row['senddate'],$row['title'],0,0,$row['namerule'],$row['typedir'],0, '',0,'',$row['sitepath']); 
$arr[$letter]['title'][]=$row["title"];        
}  
ksort($arr);//字母排序 
//print_r($arr);exit; 
$b=1; 
foreach($arr as $k=>$v){ 
  
//print_r($v);exit; 
echo '<div><p class="padding-left bg-eee st">'.strtoupper($k).'</p>'; 
for ($x=0; $x<count($v['title']); $x++) { 
             echo '<a rel="nofollow noopener noreferrer" href="'.$v[url][$x].'"><strong>'. $v[title][$x].'</strong></a><br/><hr/>'; 
              
        }     
             echo '<br/></div>';// print_r($b%4); 
             if($b%3==0){echo '<hr></hr>';//hr{background:#ddd;color:#ddd;clear:both;float:none;width:100%;height:1px;margin:10px 0;
             border:none;-moz-box-sizing:content-box;box-sizing:content-box;}hr.space{background:#fff;color:#fff;visibility:hidden;}hr的css,强制换行,防止错位 
             } 
             $b++; 
             } 
{/dede:php} 
</div> 
</div>