php正則獲取網頁標題、關鍵字、網頁描述代碼


php正則獲取網頁關鍵字,代碼如下:

function get_keywords($html)
{
$html=strtolower($html);
preg_match("@<head[^>]*>(.*?)</head>@si",$html, $regs);
$headdata = $regs[1];
preg_match("/<meta +name *=["']?keywords["']? *content=["']?([^<>"]+)["']?/i", $headdata, $res);
if (isset ($res)) {
$keywords = $res[1];
}
if ($keywords == "") $keywords = "無";
$keywords=replace_word(textcut($keywords,250));
$keywords=str_replace("-",",",$keywords);
$keywords=str_replace(",",",",$keywords);
$keywords=str_replace(" ",",",$keywords);
$keywords=str_replace("|",",",$keywords);
$keywords=str_replace("、",",",$keywords);
$keywords=str_replace(",,",",",$keywords);
$keywords=str_replace("<","",$keywords);
$keywords=str_replace(">","",$keywords);
return addslashes(trim($keywords));
}
 
         

  

 php正則獲取網頁標題,代碼如下

function get_title($html)
{
  $html=strtolower($html);
 $title = str_replace(" - ",",",cut($html,"<title>", "</title>" ));
//if ($title == "") $title = "無標題";
if ($title) $title=replace_word(textcut($title,80));
if ($title) $title=preg_replace("/<(.*?)>/","",$title);
return addslashes(trim($title));
}
 
         

  

 php正則獲取網頁描述description,代碼如下

function get_description($html)
{
$html=strtolower($html);
preg_match("@<head[^>]*>(.*?)</head>@si",$html, $regs);
$headdata = $regs[1];
preg_match("/<meta +name *=["']?description["']? *content=["']?([^<>"]+)["']?/i", $headdata, $res);
      if (isset ($res)) {
       $description = $res[1];
      }
if ($description == "") $description = "無";
$description=replace_word(textcut($description,250));
$description=str_replace("-",",",$description);
$description=str_replace(",",",",$description);
$description=str_replace(" ",",",$description);
$description=str_replace("|",",",$description);
$description=str_replace("、",",",$description);
$description=str_replace(",,",",",$description);
$description=str_replace("<","",$description);
$description=str_replace(">","",$description);
return addslashes(trim($description));
}
 
        

 


免責聲明!

本站轉載的文章為個人學習借鑒使用,本站對版權不負任何法律責任。如果侵犯了您的隱私權益,請聯系本站郵箱yoyou2525@163.com刪除。



 
粵ICP備18138465號   © 2018-2025 CODEPRJ.COM