function subbrief($brief,$list_brief_num)
{
if(strlen($brief)<=$list_brief_num)
{
$brief=$brief;
}
else
{
$parity= 0;
for($i=0;$i<$list_brief_num;$i++)
{
$temp_str=substr($brief,$i,1);
if(Ord($temp_str)>127) $parity+=1; //通过for循环检验字符ASCII值是否>127，大于127，$parity增加1。飞飞Asp技术!乐园
}
if($parity%2==1)
{
$brief=substr($brief,0,($list_brief_num-1))."...";
}
else
{
$brief=substr($brief,0,$list_brief_num)."...";
}
}
return $brief;
}