php arclist标签，截取字符怎么在后面加上点点点
初学织梦啊
那个标签
dede:arclist titlelen=42 row=12}
  <li class='dotline'><a href="[field:arcurl/]">[field:title/]</a></li>
{/dede:arclist}
怎么使超出42长度的后面自动加上...点点点啊

------解决方案--------------------
也可以在从数据库里取title的时候，就截取
SELECT id,left(title,42) as title from table
------解决方案--------------------

探讨

也可以在从数据库里取title的时候，就截取
SELECT id,left(title,42) as title from table

------解决方案--------------------
//实现中英文截取
function cut_str($sourcestr, $cutlength = 10, $etc = '...')
{
$returnstr = '';
$i = 0;
$n = 0.0;
$str_length = strlen($sourcestr); //字符串的字节数
while ( ($n<$cutlength) and ($i<$str_length) )
{
$temp_str = substr($sourcestr, $i, 1);
$ascnum = ord($temp_str); //得到字符串中第$i位字符的ASCII码
if ( $ascnum >= 252) //如果ASCII位高与252
{
$returnstr = $returnstr . substr($sourcestr, $i, 6); //根据UTF-8编码规范，将6个连续的字符计为单个字符
$i = $i + 6; //实际Byte计为6
$n++; //字串长度计1
}
elseif ( $ascnum >= 248 ) //如果ASCII位高与248
{
$returnstr = $returnstr . substr($sourcestr, $i, 5); //根据UTF-8编码规范，将5个连续的字符计为单个字符
$i = $i + 5; //实际Byte计为5
$n++; //字串长度计1
}
elseif ( $ascnum >= 240 ) //如果ASCII位高与240
{
$returnstr = $returnstr . substr($sourcestr, $i, 4); //根据UTF-8编码规范，将4个连续的字符计为单个字符
$i = $i + 4; //实际Byte计为4
$n++; //字串长度计1
}
elseif ( $ascnum >= 224 ) //如果ASCII位高与224
{
$returnstr = $returnstr . substr($sourcestr, $i, 3); //根据UTF-8编码规范，将3个连续的字符计为单个字符
$i = $i + 3 ; //实际Byte计为3
$n++; //字串长度计1
}
elseif ( $ascnum >= 192 ) //如果ASCII位高与192
{
$returnstr = $returnstr . substr($sourcestr, $i, 2); //根据UTF-8编码规范，将2个连续的字符计为单个字符
$i = $i + 2; //实际Byte计为2
$n++; //字串长度计1
}
elseif ( $ascnum>=65 and $ascnum<=90 and $ascnum!=73) //如果是大写字母 I除外
{
$returnstr = $returnstr . substr($sourcestr, $i, 1);
$i = $i + 1; //实际的Byte数仍计1个
$n++; //但考虑整体美观，大写字母计成一个高位字符
}
elseif ( !(array_search($ascnum, array(37, 38, 64, 109 ,119)) === FALSE) ) //%,&,@,m,w 字符按１个字符宽
{
$returnstr = $returnstr . substr($sourcestr, $i, 1);
$i = $i + 1; //实际的Byte数仍计1个
$n++; //但考虑整体美观，这些字条计成一个高位字符
}
else //其他情况下，包括小写字母和半角标点符号
{
$returnstr = $returnstr . substr($sourcestr, $i, 1);
$i = $i + 1; //实际的Byte数计1个
$n = $n + 0.5; //其余的小写字母和半角标点等与半个高位字符宽...
}
}
if ( $i < $str_length )
{
$returnstr = $returnstr . $etc; //超过长度时在尾处加上省略号
}
return $returnstr;
}

OR

select * from tablename substring(title,1,10) as t

------解决方案--------------------
首页上有一段代码，其实说白了就是
自己加上...，何必要程序加

PHP code

 {dede:arclist flag='h' limit='0,1'}
                        <h2><a href="[field:arcurl/]">[field:title/]</a></h2>
                        <p>[field:description function='cn_substr(@me,110)'/]...<a href="[field:arcurl/]">[查看全文]</a></p>
                        {/dede:arclist}