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(.*?)/si'; 
preg_match_all($block_rule,$str,$fenlei);
if(!empty($fenlei)){
  $count = count($fenlei[1]);
  for($i=0;$i<$count;$i++){
    $cat_rule='/(.*?)<\/a>/si';
    preg_match_all($cat_rule,$fenlei[1][$i],$cats);
    if(!empty($cats)){
      $url_r = $cats[1][0];
      $name_r = $cats[2][0];
      echo ''.$name_r.'
 ';
    }
  }
}
 
//curl获取网页内容
function get_str($url){
	$ch = curl_init($url);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);//超时 0不限制
  //ssl
  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
  curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); 
	$str = curl_exec($ch);
	curl_close($ch);
	return $str;
}


20181009测试有效