php分页需要什么条件

class Mypage{
 private $cur_page;//当前页
 private $total;//总条数
 private $page_size = 10;//每页显示的条数
 private $total_page;//总页数
 private $first_page;//首页显示名称
 private $pre_page;//上一页的显示名称
 private $nex_page;//下一页的显示名称
 private $end_page;//尾页名称
 private $params;//分页后面的筛选参数
 private $num_size = 2;//当前页前后显示几个分页码
 private $base_url;//分页链接地址
 public function __construct(array $page_config=[])
 {
 $this->cur_page = $page_config['cur_page'];
 $this->total = $page_config['total'];
 $this->page_size = $page_config['page_size'];
 $this->base_url = $page_config['base_url'];
 $this->pre_page = isset($page_config['pre_page']) ? $page_config['pre_page'] : "上一页";
 $this->nex_page = isset($page_config['next_page']) ? $page_config['next_page'] : "下一页";
 $this->end_page = isset($page_config['end_page']) ? $page_config['end_page'] : "尾页";
 $this->first_page = isset($page_config['first_page']) ? $page_config['first_page'] : "首页";
 $this->num_size = isset($page_config['num_size']) ? $page_config['num_size'] : 2;
 $this->params = isset($page_config['params']) ?$page_config['params'] : '';
 $this->total_page = ceil($this->total/$this->page_size);
 }
}