How to implement the group menu function in WeChat applet with PHP

PHP is a programming language widely used in Web development. By combining the basic library of WeChat mini programs and the API interface of mini programs, developers can use PHP language to implement many functions in WeChat mini programs, including group menu functions. .

1. How to implement grouping menus in WeChat mini programs

The grouping menus in WeChat mini programs are generally implemented through a list. This list is divided into several groups, and each group has several menus. Click the corresponding menu to enter the corresponding page. When implementing this group menu, data can be obtained and processed through the API interface provided by PHP and WeChat applet.

2. Obtain group menu data

There are generally two ways to obtain group menu data: one is to obtain it through the data interface provided by the WeChat applet, but to obtain it through its own backend server.

If you use the data interface provided by the WeChat applet to obtain it, you need to call the interface provided by the WeChat applet to return the data to the applet page. This method is relatively simple and does not require building a backend server by yourself. However, it should be noted that the interface provided by the WeChat applet has many restrictions and must meet the data format and data restrictions provided by the WeChat applet.

If you use your own backend server to obtain data, you can use PHP language to interact with the MySQL database. The relevant data of the group menu can be obtained by querying the data table, and then processed into JSON format. At the same time, the API interface of the WeChat applet is called to return the data to the applet page.

3. Processing the grouped menu data

After obtaining the grouped menu data, it needs to be processed into a format that meets the requirements of the mini program. The WeChat applet requires the data format to be in JSON format. The specific format is as follows:

{
    "menus": [
        {
            "name": "菜单1",
            "pagePath": "/pages/menu1/menu1"
        },
        {
            "name": "菜单2",
            "pagePath": "/pages/menu2/menu2"
        },
        {
            "name": "菜单3",
            "pagePath": "/pages/menu3/menu3"
        }
    ]
}

Among them, menus is an array, and each element in the array is an object, representing a menu item. Each menu item contains two attributes: name represents the menu name, and pagePath represents the page path corresponding to the menu.

In PHP, you can use arrays and loop statements to process the obtained data, and finally process it into JSON format.

$menu_data = array();
//模拟从MySQL数据库中获取到的数据，可以根据实际情况进行修改
$menu_data['group'] = array(
    array(
        'name' => '分组1',
        'menus' => array(
            array(
                'name' => '菜单1',
                'path' => '/pages/menu1/menu1'
            ),
            array(
                'name' => '菜单2',
                'path' => '/pages/menu2/menu2'
            ),
            array(
                'name' => '菜单3',
                'path' => '/pages/menu3/menu3'
            )
        )
    ),
    array(
        'name' => '分组2',
        'menus' => array(
            array(
                'name' => '菜单4',
                'path' => '/pages/menu4/menu4'
            ),
            array(
                'name' => '菜单5',
                'path' => '/pages/menu5/menu5'
            )
        )
    )
);

$menus_array = array();
foreach($menu_data['group'] as $group){
    $menus = $group['menus'];
    foreach($menus as $menu){
        $menu_array = array(
            'name' => $menu['name'],
            'pagePath' => $menu['path']
        );
        array_push($menus_array, $menu_array);
    }
}
$json_data = array(
    'menus' => $menus_array
);
$json_string = json_encode($json_data);
echo $json_string;

4. Return the grouped menu data

Return the grouped menu data, usually through PHP and the API interface provided by the WeChat applet to interact. In the PHP script, call the API interface to return the data to the applet. The API interface is an HTTP request and needs to follow the relevant protocols and restrictions of HTTP requests.

$url = 'https://api.weixin.qq.com/cgi-bin/wxopen/template/list?access_token=' . $access_token;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);
curl_close($ch);

echo $result;

The above code example is used to obtain data from the WeChat applet. If you need to return data to the applet page, you need to call the API interface of the WeChat applet. The specific implementation is related to the WeChat applet API interface document.

5. Summary

PHP is one of the commonly used programming languages ​​​​in Web development. In the development of WeChat mini programs, the PHP language can also be used to implement functions in mini programs. This article briefly introduces how to use PHP language to obtain data by querying the MySQL database, process it into data in JSON format, and use the API interface provided by the WeChat applet to return the data to the applet page. I hope this article can help readers who are interested in WeChat applet development and PHP language.

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