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 利用discuz的分词服务器实现文章内容自动提取关键字,进而优化网站内链的函数方法方法一:  
此方法提取的关键字比较接近  
- function getkey($contents){  
 
 - //$rows = strip_tags($contents);
 
 - $arr = array(' ',' ',"\s", "\r\n", "\n", "\r", "\t", ">", "“", "”","<br />");
 
 - $qc_rows = str_replace($arr, '', $rows);
 
 - if(strlen($qc_rows)>2400){
 
 - $qc_rows = substr($qc_rows, '0', '2400');
 
 - }
 
 - $data = @implode('', file("http://keyword.discuz.com/related_kw.html?title=$qc_rows&ics=gbk&ocs=gbk"));
 
 - preg_match_all("/<kw>(.*)A\[(.*)\]\](.*)><\/kw>/",$data, $out, PREG_SET_ORDER);
 
 - $key="";
 
 - for($i=0;$i<5;$i++){
 
 - $key=$key.$out[$i][2];
 
 - if($out[$i][2])$key=$key.",";
 
 - }
 
 - return $key;
 
 - }
 
 
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