mysql - 这个节目里有什么

Question

我已经完成了连接到 mysql 服务器的类(class)。当我运行它时出现错误:

Warning: mysql_connect() [function.mysql-connect]: php_network_getaddresses: getaddrinfo failed: This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server. in C:\wamp\www.php on line 18

Warning: mysql_connect() [function.mysql-connect]: [2002] php_network_getaddresses: getaddrinfo failed: This is usually a (trying to connect via tcp://test:3306) in C:\wamp\www.php on line 18

Warning: mysql_connect() [function.mysql-connect]: php_network_getaddresses: getaddrinfo failed: This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server. in C:\wamp\www.php on line 18 Error cannnot connect to mysql server

我检查我的 sql server 它有高权限并且没有密码。

我的代码:

<?php
class mysql
{
    var $user;
    var $password;
    var $database;
    var $host;

    function mysql($username, $password, $database, $host)
    {
        $this->user = $username;
        $this->password = $password;
        $this->database = $database;
        $this->host = $host;
    }
    function connect()
    {
        $conn = mysql_connect($this->host, $this->user, $this->password, $this->database)
                or die("Error cannnot connect to mysql server");
        echo "Connected successfully to Mysql server";
        mysql_close($conn);
    }
}
$connect = new mysql('127.0.0.1','root','','test');
$connect->connect();
?>

Answer 1

尝试:

$connect = new mysql('root','','test','127.0.0.1');