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}
{/dede:arclist}
怎么使超出42长度的后面自动加上...点点点啊
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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
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//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{
$temp_str = substr($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{
$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 {
$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
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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><div class="aritcle_card flexRow">
<div class="artcardd flexRow">
<a class="aritcle_card_img" href="/ai/2675" title="元气AI Bot"><img
src="https://img.php.cn/upload/ai_manual/001/246/273/177034807199558.png" alt="元气AI Bot" onerror="this.onerror='';this.src='/static/lhimages/moren/morentu.png'" ></a>
<div class="aritcle_card_info flexColumn">
<a href="/ai/2675" title="元气AI Bot">元气AI Bot</a>
<p>猎豹推出的国产Clawdbot ，一键安装，免费使用</p>
</div>
<a href="/ai/2675" title="元气AI Bot" class="aritcle_card_btn flexRow flexcenter"><b></b><span>下载</span> </a>
</div>
</div> {/dede:arclist}<div class="clear">
</div>
