function text_zhaiyao($text,$length){ //文章摘要生成函数 $test:内容 $length:摘要长度
global $Briefing_Length;
mb_regex_encoding("UTF-8");
if(mb_strlen($text) <= $length ) return $text;
$Foremost = mb_substr($text, 0, $length);
$re = "<(/?)
(P|DIV|H1|H2|H3|H4|H5|H6|ADDRESS|PRE|TABLE|TR|TD|TH|INPUT|SELECT|TEXTAREA|OBJECT|A|UL|OL|LI|
BASE|META|LINK|HR|BR|PARAM|IMG|AREA|INPUT|SPAN)[^>]*(>?)";
$Single = "/BASE|META|LINK|HR|BR|PARAM|IMG|AREA|INPUT|BR/i";
$Stack = array(); $posStack = array();
mb_ereg_search_init($Foremost, $re, 'i');
while($pos = mb_ereg_search_pos()){
$match = mb_ereg_search_getregs();
/* [Child-matching Formulation]:
$matche[1] : A "https://www.jb51.net/" charactor indicating whether current "<...>" Friction is
Closing Part
$matche[2] : Element Name.
$matche[3] : Right > of a "<...>" Friction
*/
if($match[1]==""){
$Elem = $match[2];
if(mb_eregi($Single, $Elem) && $match[3] !=""){
continue;
}
php截取html字符串及自动补全html标签的方法(2)
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