php – 无法在codeigniter中自动/手动加载数据库库

我无法在CodeIgniter的默认提取代码中加载数据库库

1)通过autoload.PHP

$autoload['libraries'] = array('database');

2)内部控制器通过

$this->load->library("database");

要么

$CI =& get_instance();
$CI->load->database();

错误消息：由于发生内部服务器错误,无法显示页面.

环境：CodeIgniter 2.1.3,IIS 5.2(ISAPI)上的PHP 5.2.13,MysqL(5.0.45-community-nt),Plesk.

我已经确认用纯PHP编写的代码允许我访问数据库.

一旦删除此库,我就可以看到该页面.我能够加载其他库,如session和我的自定义库.我缺少什么想法？

这是我的数据库配置设置：

$active_record = TRUE;  

$db['default']['hostname'] = 'localhost';  
$db['default']['username'] = 'username';  
$db['default']['password'] = 'password';  
$db['default']['database'] = 'databasename';  
$db['default']['dbdriver'] = 'MysqL';  
$db['default']['dbprefix'] = '';  
$db['default']['pconnect'] = TRUE;  
$db['default']['db_debug'] = TRUE;  
$db['default']['cache_on'] = FALSE;  
$db['default']['cachedir'] = '';  
$db['default']['char_set'] = 'utf8';  
$db['default']['dbcollat'] = 'utf8_general_ci';  
$db['default']['swap_pre'] = '';  
$db['default']['autoinit'] = TRUE;  
$db['default']['stricton'] = FALSE;

解决方法:

您可以检查服务器日志,也可以通过config.PHP启用CI日志

转到config.PHP的第206行

/*
|--------------------------------------------------------------------------
| Error Logging Threshold
|--------------------------------------------------------------------------
|
| If you have enabled error logging, you can set an error threshold to
| determine what gets logged. Threshold options are:
| You can enable error logging by setting a threshold over zero. The
| threshold determines what gets logged. Threshold options are:
|
|   0 = disables logging, Error logging TURNED OFF
|   1 = Error Messages (including PHP errors)
|   2 = Debug Messages
|   3 = informational Messages
|   4 = All Messages
|
| For a live site you'll usually only enable Errors (1) to be logged otherwise
| your log files will fill up very fast.
|
*/
$config['log_threshold'] = 4;

将值设置为4并检查/ application文件夹中是否有775 chmod / logs目录,如果没有创建,CI将自动在该目录中创建日志文件.

你将能够以这种方式检查任何CI错误

正如您从日志文件中报告的那样

更改,/ config目录下的database.PHP第50行：

$db['default']['pconnect'] = TRUE;

至

$db['default']['pconnect'] = FALSE;