织梦获得首字母方法,并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,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'],'utf-8'); 
}else if(ord($row['title'])>=97 and ord($row['title'])<=122){ //小写英文开头 
$letter=iconv_substr($row['title'],'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;  
}