Question

我正在尝试创建一个类，当Web中的任何站点加载时，该类加载所有类。这里有你要加载的类：

<?php

include_once filter_input(INPUT_SERVER, "DOCUMENT_ROOT") . "/Config.inc.php";

class Connection extends Conf{

    private static $connection;
    private static $config;

    public function __construct(){
        $this->config = new Conf;
    }

注意：该类扩展了Conf（config.inc.php文件），因为获取数据的方法受到保护，而不是公共。

我还要加载以下类：

<?php

/*
 * 
 * El contenido de este archivo está protegido y para incluirse debe extenderse a la clase Config
 * 
 */

 Class Conf {

    private static $db_server = "server";
    private static $db_user = "username";
    private static $db_pass = "password";
    private static $db_maindb = "database";

    private static $server_folder = "folder";

     public function __construct(){

         $this->db_server = "server";
         $this->db_user = "username";
         $this->db_pass = "password";
         $this->db_maindb = "database";

         $this->server_folder = "folder";

     }

我确信它是这样的：

class Builder {
 public function build(){
  Connection::__construct();
  Conf::__construct();
 }
}

但它不起作用。请帮忙吗？

Answer 1

你在这里混合静态变量和类变量。

您正在尝试使用$ this在类上设置静态变量，该变量与类的实例相关。要设置静态变量，你应该使用self ::，在__construct里面 - 当你创建一个类的实例时会调用它，即：

<?php
$blah = new Conf();

此外，您的第一个classe很奇怪，因为您正在扩展Conf，但也在构造函数中创建它的新实例。

我认为将配置文件中定义的所有变量作为常量更有意义，然后您可以创建一个新的配置类，将这些常量作为参数传递给构造函数，使其能够在以后重用

的config.inc.php

<?php
define("SERVER", "hostname");
define("USERNAME", "username");
define("PASSWORD", "P@ssw0rd");
define("DATABASE", "maindb");

你的课程是这样的：

<?php


include_once filter_input(INPUT_SERVER, "DOCUMENT_ROOT") . "/Config.inc.php";


class Connection
{

    private $connection;
    private $config;

    public function __construct(Config $config)
    {
        $this->config = $config;
    }

    public function connect()
    {
        $this->connection = new mysqli($this->config->getServer(), $this->config->getUsername(), $this->config->getPassword(), $this->config->getDatabase());
    }
}


    class Config
    {

        private $server;
        private $username;
        private $password;
        private $database;

        /**
         * @return mixed
         */
        public function getServer()
        {
            return $this->server;
        }

        /**
         * @param mixed $server
         */
        public function setServer($server)
        {
            $this->server = $server;
        }

        /**
         * @return mixed
         */
        public function getUsername()
        {
            return $this->username;
        }

        /**
         * @param mixed $username
         */
        public function setUsername($username)
        {
            $this->username = $username;
        }

        /**
         * @return mixed
         */
        public function getPassword()
        {
            return $this->password;
        }

        /**
         * @param mixed $password
         */
        public function setPassword($password)
        {
            $this->password = $password;
        }

        /**
         * @return mixed
         */
        public function getDatabase()
        {
            return $this->database;
        }

        /**
         * @param mixed $database
         */
        public function setDatabase($database)
        {
            $this->database = $database;
        }

        /**
         * @return string
         */
        public function getServerFolder()
        {
            return $this->server_folder;
        }

        /**
         * @param string $server_folder
         */
        public function setServerFolder($server_folder)
        {
            $this->server_folder = $server_folder;
        }

        private $server_folder;

        public function __construct($server, $username, $password, $database)
        {

            $this->server = $server;
            $this->username = $username;
            $this->password = $password;
            $this->database = $database;

            $this->server_folder = "folder";

        }
    }

然后，最后使用它：

<?php

    $config = new Config($server, $username, $password, $database);

    $connection = new Connection($config);

Answer 2

代码出错，

首先无法通过 - ＆gt;访问静态属性运营商

line-height

尝试使用self :: for static members来工作

text

您可能希望查看spl auto loader，以便无论何时声明类，它都会自动加载文件而您不必自己包含类

         $this->db_server = "server";
         $this->db_user = "username";
         $this->db_pass = "password";
         $this->db_maindb = "database";

         $this->server_folder = "folder";

和

     self::$db_server = "server";
     self::$db_user = "username";
     self::$db_pass = "password";
     self::$db_maindb = "database";

     self::$server_folder = "folder";

我假设您正在尝试加载mysql的连接凭据。请访问DBCon，这可能对您有用

在加载网页上召唤所有php类

2 个答案: