2. 删除博文时 把内容里面的图片一并删除 (怎么把内容里面的的图片找出并删除呢?)
3. 载取 内容一部分时 过滤img图片 (我用内容载取函数显示内容时图片也显示了,用什么办法过滤图片呢?)
这是我用的代码:
function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true){
if(function_exists("mb_substr")) {
if($suffix){
if($str==mb_substr($str, $start, $length, $charset)){
return mb_substr($str, $start, $length, $charset);
}
else{
return mb_substr($str, $start, $length, $charset)."...";
}
}
else{
return mb_substr($str, $start, $length, $charset);
}
}
elseif(function_exists('iconv_substr')) {
if($suffix){
if($str==iconv_substr($str,$start,$length,$charset)){
return iconv_substr($str,$start,$length,$charset);
}
else{
return iconv_substr($str,$start,$length,$charset)."...";
}
}
else{
return iconv_substr($str,$start,$length,$charset);
}
}
$re['utf-8'] = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xff][\x80-\xbf]{3}/";
$re['gb2312'] = "/[\x01-\x7f]|[\xb0-\xf7][\xa0-\xfe]/";
$re['gbk'] = "/[\x01-\x7f]|[\x81-\xfe][\x40-\xfe]/";
$re['big5'] = "/[\x01-\x7f]|[\x81-\xfe]([\x40-\x7e]|\xa1-\xfe])/";
preg_match_all($re[$charset], $str, $match);
$slice = join("",array_slice($match[0], $start, $length));
if($suffix) return $slice."…";
return $slice;
}谢谢! 最佳答案