@data 文章列表分页

对文章评分有序集合或者时间发布有序集合做分页处理，获取文章ID后，去文章详情散列表中查询该文章详情

@author Lorne

@date 2017-03-03
/
public function get_articles($page =1,$orders =''){
$redis = $this->redis;
$db = "queue";
//$orders = "time:";
$per_page = 3;
$start = ($page-1)$per_page;
$end = $start + $per_page -1;
$ids = $redis -> zrevrange($orders,$start,$end,$db);
foreach($ids as $key=>$val){
$data = $redis -> hgetall($val,$db);
$data['id'] = $val;
$articles[] = $data;
}
return $articles;
}

@data 文章添加组和移除组

讲该文章加入不同的分组中，或者从个分组中移除该篇文章

@author Lorne

@date 2017-03-03
*/
public function add_remove_group($article_id,$to_add = [],$to_remove = []){
$redis = $this->redis;
$db = "queue";
$article = "article:".$article_id;
foreach($to_add as $key=>$val){
$redis -> sadd('group:'.$val,$db);
}
foreach($to_remove as $key=>$val){
$redis -> srem('grouo:'.$val,$db);
}
}

@data 组集合中的文章根据评分或者时间分页排序

@author Lorne

@date 2017-03-03
*/
public function get_grouop_articles($orders = "time:"){
$redis = $this -> redis;
$db = "queue";
$group = '开发';
$key = $orders.$group;
if($redis -> exists($key,$db)){
$argument = 2;
$data = $redis -> zinterstore($key,$argument,['group:'.$group,$orders],$db);
//$this -> expire($key,60,$db);
}
return $this->get_articles(2,$key);
}