【PHP】phpcms 关联连接修复

    function _keylinks($txt, $replacenum = '',$link_mode = 1) {
        $keywords = $this->data['keywords'];

        if($keywords)
        {
            $keywords = strpos(',',$keywords) === false ? explode(' ',$keywords) : explode(',',$keywords);
        }

        if($link_mode && !empty($keywords))
        {
            foreach($keywords as $keyword)
            {
                $linkdatas[] = $keyword;
            }
        } else {
            $linkdatas = getcache('keylink','commons');
        }

        if($linkdatas)
        {
            $word = $replacement = array();

            foreach($linkdatas as $v)
            {
                if($link_mode && $keywords)
                {
                    $word1[]       = '/' . preg_quote($v, '/') . '(?!([^<]*>)|([^<]*<\/a>))/is';
                    $word2[]       = $v;
                    $replacement[] = '<a href="javascript:;" onclick="show_ajax(this)" class="keylink">'.$v.'</a>';
                } else {
                    $word1[]       = '/' . preg_quote($v[0], '/') . '(?!([^<]*>)|([^<]*<\/a>))/is';
                    $word2[]       = $v[0];
                    $replacement[] = '<a href="'.$v[1].'" target="_blank" class="keylink">'.$v[0].'</a>';
                }
            }

            if($replacenum != '')
            {
                $txt = preg_replace($word1, $replacement, $txt, $replacenum);
            } else {
                $txt = str_replace($word2, $replacement, $txt);
            }
        }

        return $txt;
    }