What conditions are needed for php pagination?

We cannot avoid using the paging function during the project development process. Take PHP as an example. There are many large and small PHP frameworks on the market. Of course, small functions such as paging can be used directly in these frameworks. of.

#The paging functions of these frameworks are very convenient to use. Once you configure the parameters required for paging, the results will be available immediately, which is very convenient for developers. But sometimes you will find that these paging functions are not what you expect. (Recommended learning: PHP video tutorial)

Of course we can achieve our needs by modifying the paging of the framework, but it is always limited to the encapsulation of the framework itself, so how do we define ourselves? As for the paging class, now we are required to not only know what it is, but also why it is so.

Okay, so much nonsense, let’s get down to business.

To implement the paging function, you must first know the total number of data items, the number of items displayed on each page, and how many paging numbers are displayed. These three are necessary conditions.

Let’s take a look at the specific implementation first

Demonstrate how to write the paging class:

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);
        }
}

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