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磁力链接打包下载

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May 23, 2016 pm 04:38 PM

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keyWord=$keyWord;
        $this->saveFile=$saveFile;
        $this->minSize=$minSize;
        $this->page=$pageRange[0];
        $this->maxPage=$pageRange[1];
    }
     
    public function run(){
         
        while($this->flag && $this->maxPage>$this->page){
            $this->timestamp=$this->microtimeFloat();
            $this->_execute();
            $this->page++;
            $this->_notice();
             
        }
    }
    /**
     * 执行
     */
    protected function _execute(){
         
        $this->_getUrl();
        $this->_getHtmlPage();
        $this->_parseHtml();
        if($this->_currentMagnetCount){//当有磁力链接时保存
            $this->_save();
        }
         
    }
     
    public function microtimeFloat(){
        list($usec, $sec) = explode(" ", microtime());
        return sprintf(&#39;%01.2f&#39;,(float)$usec + (float)$sec);
    }
    /**
     * 通知
     */
    protected function _notice(){
         
        $currentTime = $this->microtimeFloat();
        $useTime =sprintf(&#39;%01.2f&#39;, $currentTime-$this->timestamp);
        $this->timestamp = $currentTime;
        echo &#39;第&#39;.$this->page.&#39;页存储了&#39;.$this->_currentMagnetCount.&#39;个磁力链接,耗时&#39;.$useTime."秒\r\n";
        if(!($this->flag && $this->maxPage>$this->page)){
            echo &#39;总共存储了&#39;.$this->_magnetCount.&#39;个磁力链接&#39;."\r\n";
        }
    }
    /**
     * 设置url
     */
    protected function _getUrl(){
         
        $this->_url = $this->host.&#39;search?q=&#39;.rawurlencode($this->keyWord).&#39;&p=&#39;.$this->page;   
    }
    /**
     * 获得html文件内容
     */
    protected function _getHtmlPage(){
         
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_TIMEOUT,$this->timeout);
        curl_setopt($ch, CURLOPT_URL, $this->_url);
        curl_setopt($ch, CURLOPT_SSLVERSION,3); 
        $result = curl_exec($ch);
        if($result === false){
            //echo &#39;Curl error: &#39;. curl_errno($ch) .&#39; : &#39;. curl_error($ch);
            $opts = array(
                &#39;https&#39;=>array(
                    &#39;method&#39;=>"GET",
                    &#39;timeout&#39;=>$this->timeout,//单位秒
                )
            );
            $context = stream_context_create($opts);
            $this->_html =  @file_get_contents($this->_url,false,$context);
        }else{
            $this->_html = $result;
        }
        curl_close($ch);
    }
    /**
     * 抓取磁力链接
     */
    protected function _parseHtml(){
         
        preg_match_all(&#39;/href="(magnet\:\?xt=urn\:btih\:.+?)"/&#39;,$this->_html,$magnet);
        preg_match_all(&#39;/attr_val">(\d+?\.?\d*? [G|M|K]B)/&#39;,$this->_html,$size);
        if(empty($size[1])){
            $this->flag=false;//当获取磁力链接时不到时，停止翻页
        }
        foreach($size[1] as $key=>$val){
            if($this->_compareSize($val)){
                $this->_magnet[]=$magnet[1][$key];
            }       
        }
        $this->_currentMagnetCount = count($this->_magnet);
        $this->_magnetCount += count($this->_magnet);
    }
    /**
     * 比较磁力链接文件的大小
     */
    protected function _compareSize($size){
         
        $number = substr($size,0,strpos($size,&#39; &#39;));
        $unit = substr($size,strpos($size,&#39; &#39;)+6);
 
        $n=&#39;&#39;;
        switch($unit){
            case &#39;GB&#39;:
                    $n=1;
                    break;
            case &#39;MB&#39;:
                    $n=1024;
                    break;
            case &#39;KB&#39;:
                    $n=1048576;
                    break;
            default :
                    $n=false;
        }
        if($n===false){
            try {
                throw new Exception("文件大小单位识别失败\n");
            } catch (Exception $e) {
                echo $e->getMessage();
                return false;
            }
             
        }
        return ( $this->minSize < ($number/$n) );
    }
    /**
     * 把磁力链接保存到文件中
     */
    protected function _save(){
         
        $data = &#39;&#39;;
        foreach($this->_magnet as $val){
            $data .= $val."\n";
            $this->magnetNum++;
            if(0==$this->magnetNum%15)
              $data.="\n\n";
        }
        file_put_contents($this->saveFile,$data,FILE_APPEND);
        $this->_magnet=array();
    }
     
}
//示例
$s = new Magnet(&#39;LOL&#39;,&#39;magnet.log&#39;,2,array(0,10));
$s->run();

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