Discuss how to use thinkphp to sum and rank data

ThinkPHP is an open source web application framework written in PHP language. It not only supports the MVC (Model-View-Controller) application design pattern, but also provides complete functions and extensions. It decouples the request-based response process. ThinkPHP is a powerful framework in web application development and has a wide range of applications. In this article, we will discuss how to use ThinkPHP to sum and display its ranking.

The process of ThinkPHP data summation and ranking generally requires the following steps:

Step 1: Connect to the database

Go to the ThinkPHP official website and download the latest ThinkPHP version, unzip and put ThinkPHP in a server environment. We need to create a new Test project in the ThinkPHP directory, and create a controller and model in the project to obtain data.

// application/index/controller/Index.php
namespace app\index\controller;

use think\Controller;
use app\index\model\Data;

class Index extends Controller {
    public function index() {
        $list = Data::all();
        // 此处处理数据求和排名
        $this->assign('list', $list);
        return $this->fetch();
    }
}

// application/index/model/Data.php
namespace app\index\model;

use think\Model;

class Data extends Model {}

ThinkPHP provides a good data access layer, we can easily extract data from the database through the above code.

Step 2: Sum

We can implement it as follows:

$sum = 0;
foreach ($list as $item) {
    $sum += $item['field'];
}

In the above code, we need to field Replace with the field name we want to sum.

Step 3: Ranking

Next, we need to rank the summation results of the data. We first sort the data and then output the ordered table in the desired order.

function cmp($a, $b) {
    if ($a['sum'] == $b['sum']) {
        return 0;
    }
    return $a['sum'] > $b['sum'] ? -1 : 1;
}
usort($list, "cmp");

In the above code, we need to replace sum with the name of our desired sum field.

Step 4: Output

Now that we have completed the summation and ranking of the data, we only need to render the data into HTML in order.

<table>
    <thead>
        <tr>
            <th>名称</th>
            <th>求和结果</th>
            <th>排名</th>
        </tr>
    </thead>
    <tbody>
        {volist name="list" id="vo"}
            <tr>
                <td>{$vo.name}</td>
                <td>{$vo.sum}</td>
                <td>{$i++}</td>
            </tr>
        {/volist}
    </tbody>
</table>

In the above code, we need to replace name with the column where we store the name and sum with the column where we sum.

The above are all the steps to use ThinkPHP to implement data summation and ranking. Through our explanation, you should have mastered the method of implementing data summation and ranking in ThinkPHP.

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