由于新浪SAE对文件权限的限制，cache目录无法修改权限，因此原版Codeigniter无法直接使用。可以尝试codeIgniter 2.10 for SAE：http://code.google.com/p/ci-sae/。
在database.php中配置如下：
复制代码 代码如下:
$db['default']['hostname'] = SAE_MYSQL_HOST_M;
$db['default']['username'] = SAE_MYSQL_USER;
$db['default']['password'] = SAE_MYSQL_PASS;
$db['default']['database'] = SAE_MYSQL_DB;
$db['default']['dbdriver'] = 'mysqli';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = FALSE;
$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;
$db['default']['port'] = SAE_MYSQL_PORT;
注意其中$db['default']['dbdriver'] 与$db['default']['pconnect']项，不然会出现如下的错误提示：
A Database Error Occurred
Unable to connect to your database server using the provided settings.
Filename: core/Loader.php
Line Number: 346
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