故障使用PHP

Question

我有一个3文件连接到MySQL数据库：

class.database.php 
config.php 
test.php 

在class.database.php使用我：

<?php 
class Database { 

    private $db_connect; 
    function __construct($config) { 
     $this->connect($config); 
    } 

    function connect($config) { 
     $this->db_connect = @mysql_connect($config['hostname'], $config['dbuser'], $config['dbpass']) or die("Can't connect to mysql server"); 
     @mysql_select_db($config['dbname'], $this->db_connect) or die("Can't select database mysql server"); 
     $this->query('set names utf8'); 
    } 

    function disconnect() { 
     mysql_close($this->db_connect); 
    } 

} 
?> 

在config.php我使用：

<?php 
include_once 'class.database.php'; 

$config['hostname'] = 'localhost'; 
$config['dbuser'] = 'root'; 
$config['dbpass'] = ''; 
$config['dbname'] = 'test'; 

$db = new Database($config); 
?> 

而且test.php的我使用：

<?php 
include 'config.php'; 
include 'class.database.php'; 

时在wampserver运行test.php的是主机警报错误是Fatal error: Cannot redeclare class Database in class.database.php on line 2

如何解决呢？

Answer 1

您是include文件两次，这会产生此错误。总是使用include_once，而不是include。