php 自寫函數代碼 擷取關鍵字 去超連結_PHP教程

來源:互聯網
上載者:User
1.根據權重擷取關鍵字

複製代碼 代碼如下:
function getkey($contents){
$rows = strip_tags($contents);
$arr = array(' ',' ',"\s", "\r\n", "\n", "\r", "\t", ">", "“", "”");
$qc_rows = str_replace($arr, '', $rows);
if(strlen($qc_rows)>2400){
$qc_rows = substr($qc_rows, '0', '2400');
}
$data = @implode('', file("http://keyword.discuz.com/related_kw.html?title=$contents&ics=gbk&ocs=gbk"));
preg_match_all("/(.*)A\[(.*)\]\](.*)><\/kw>/",$data, $out, PREG_SET_ORDER);
for($i=0;$i<5;$i++){
$key=$key.$out[$i][2];
if($out[$i][2])$key=$key.",";
}
return $key;
}
//$contents為你要得到關鍵字的文章


2.去掉文章中的超連結簡單,簡潔

複製代碼 代碼如下:
function get_new_content($content){
include("../simple_html_dom.php");
$html = str_get_html($content);
$a_href = $html->find('a');
foreach($a_href as $link){
$text = $link->plaintext;//連結中的文字;
$link->outertext = $text;
}
$now_content = $html->save();
}
//preg_replace("/(.*?)<\/a>/i","\${1}", $content); 這樣用正則也可以

http://www.bkjia.com/PHPjc/321115.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/321115.htmlTechArticle1.根據權重擷取關鍵字 複製代碼 代碼如下: function getkey($contents){ $rows = strip_tags($contents); $arr = array(' ','',"\s", "\r\n", "\n", "\r", "\t", "", "", "");...

  • 聯繫我們

    該頁面正文內容均來源於網絡整理,並不代表阿里雲官方的觀點,該頁面所提到的產品和服務也與阿里云無關,如果該頁面內容對您造成了困擾,歡迎寫郵件給我們,收到郵件我們將在5個工作日內處理。

    如果您發現本社區中有涉嫌抄襲的內容,歡迎發送郵件至: info-contact@alibabacloud.com 進行舉報並提供相關證據,工作人員會在 5 個工作天內聯絡您,一經查實,本站將立刻刪除涉嫌侵權內容。

    A Free Trial That Lets You Build Big!

    Start building with 50+ products and up to 12 months usage for Elastic Compute Service

    • Sales Support

      1 on 1 presale consultation

    • After-Sales Support

      24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.