<?PHP
define('PRE_DOMAIN','www');
define('DOMAIN','sina.com.cn'define('PROTOCOL','https'define('ROOT',PROTOCOL.'://'.PRE_DOMAIN.'.'.DOMAIN.'/');


foreach (spider() as $key => $value) {
    echo $value."\r\n";
}

function spider(){
    $headers=array(
        'user-agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/63.0.3239.132 Safari/537.36'
    );
    $oUrls=parseURL(get(ROOT,$headers));
    $result=();
    $queue=();
    foreach($oUrls $u){
        $result[$u]=true;
        array_push($queue,1)">);
        while(!empty($queue)){
            $v=array_pop();
            $temp=parseURL(get($v,1)">));
            $temp $j){
                    if(!isset(])){
                            yield ;
                            $j]=;
                            );
                    }   
            }   
        }   
    }
}
function get($url,1)">$header=null){
    $curl = curl_init();
    curl_setopt($curl,CURLOPT_URL,1)">$url);
    curl_setopt(FALSE);
    if (!$header)){
        curl_setopt();
    }   
    curl_setopt(); 
    $output = curl_exec($curl);

    $h = curl_getinfo($h) && $h['http_code']==200 && stripos($h['content_type'],'text/html')===false){
        return "";
    }
    curl_close(return $output;
 
}
function parseURL($content){
    preg_match_all('/<a.*href=["\']([^"\'>]*)["\'].*>/',1)">$content,1)">$matchsif($matchs[1])) return $match=$matchs[1];
    foreach ($match ) {
        $flag=$value,'http')!==false && ){
            ;
        }
        $match[$key]='https:'.;
            continueif($flag){
            unset($key]);
            ;
        }
        $key]=ROOT.trim();
    }
    $match;
}