自写函数

1.根据权重获取关键字

 

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("/<kw>(.*)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为你要得到关键字的文章

2.去掉文章中的超链接简单，简洁

 

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;//链接中的文字;
        $link->outertext = $text;
    }
    $now_content = $html->save();
}
//preg_replace("/<a .*?>(.*?)<\/a>/i","\${1}", $content); 这样用正则也可以