Question

class Users {

    function __construct(){
        //database configuration
        $dbServer = 'localhost'; //Define database server host
        $dbUsername = 'abc'; //Define database username
        $dbPassword = 'def'; //Define database password
        $dbName = 'ghi'; //Define database name

        //connect databse
        $con = mysqli_connect($dbServer,$dbUsername,$dbPassword,$dbName);
        if(mysqli_connect_errno()){
            die("Failed to connect with MySQL: ".mysqli_connect_error());
        }else{
            $this->connect = $con;
        }
    }
}

如何使用this为新文件调用新的数据库连接。这是我的function.php。我现在想为user.php打电话。

Answer 1

You can do this in user.php. First include the function.php at very top of the code after:

<?php
    include "pathtofunction.php";

Where you want to call a new database connection do this:

$db=new Users();

And you need to create the field connect before to access it. Like this:After

class Users{
    public $connect;

Answer 2

这是我测试过的答案，首先你需要构建如下所示的Database类，你需要把它放在一个PHP文件中并从你的主页中包含它（可能是index.php页面）。然后，您需要从主页启动您的类的实例以连接到数据库PHP类，该类将连接到MySQL数据库的内置函数mysql_connect，在这篇伟大的文章中详细解释了代码：{{ 3}}

<?php
// Class definition
class Database{

    // The constructor function
    public function __construct(){
        // The properties 
        $this->host = "your_DB_host_address";
        $this->login = "your_DB_login_name";
        $this->password = "your_DB_password";
        $this->name = "your_DB_name";

        // The methods 
        $this->connect(); 
        $this->select();
    }

    // The connect function
    private function connect(){
        $this->connection = mysql_connect($this->host, $this->login, $this->password) or die("Sorry! Cannot connect to the database");
    }

    // The select function
    private function select(){
        mysql_select_db($this->name, $this->connection);
    } 

}
?>

调用php数据库连接类

2 个答案: