Question

我在localhost上测试我的Codeigniter站点，然后在服务器上更新它。在它们之间切换涉及许多与调整相关的问题。

所以我想只用一个常量来配置它：MYCUSTOM_SERVER_LOCATION

然后根据我的服务器（localhost或myhost）的位置配置我的数据库连接和密码。唯一的问题是database.php在mysettings库之前运行。即使在配置文件而不是库中进行设置也会产生相同的结果。

[增订]

应用/配置/ autoload.php：

...
$autoload['libraries'] = array('mysettings','database','session');
...

应用/库/ mysettings.php：

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');

define("MYCUSTOM_SERVER_LOCATION", "localhost");

class mysettings {

//////////////////////////////////////////////////
// option: localhost
// option: 000webhost
//$config["mycustom_server"]="localhost";

}

应用/配置/ database.php中

if(MYCUSTOM_SERVER_LOCATION=="localhost")
{
    $db['default']['hostname'] = 'localhost';
    $db['default']['username'] = '...';
    $db['default']['password'] = '...';
    $db['default']['database'] = '...';
}
else if(MYCUSTOM_SERVER_LOCATION=="myserver")
{
    $db['default']['hostname'] = '...';
    $db['default']['username'] = '...';
    $db['default']['password'] = '...';
    $db['default']['database'] = '...';
}
else
{
    echo "Unknown server.";
}

输出结果：

A PHP Error was encountered
Severity: Notice
Message: Use of undefined constant MYCUSTOM_SERVER_LOCATION - assumed 'MYCUSTOM_SERVER_LOCATION'
Filename: config/database.php
Line Number: 51


A PHP Error was encountered
Severity: Notice
Message: Use of undefined constant MYCUSTOM_SERVER_LOCATION - assumed 'MYCUSTOM_SERVER_LOCATION'
Filename: config/database.php
Line Number: 58


Unknown server.

Answer 1

您可以在$active_group

中设置application/config/database.php变量

使用示例：

/* 
 The $active_group variable lets you choose which connection group to
 make active.  By default there is only one group (the 'default' group).
*/

$active_group = "development";

$db['development']['hostname'] = "localhost";
$db['development']['username'] = "us";
$db['development']['password'] = "";
$db['development']['database'] = "db1";

CodeIgniter在数据库设置之前运行库

1 个答案: