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参考http://codeigniter.org.cn/user_guide/database/connecting.html手册
首先，在database.php中设置多个数据库的连接信息，这里命名为‘test‘
$db[‘test‘][‘hostname‘] = "localhost"; $db[‘test‘][‘username‘] = "root"; $db[‘test‘][‘password‘] = ""; $db[‘test‘][‘database‘] = "database_name"; $db[‘test‘][‘dbdriver‘] = "mysql"; $db[‘test‘][‘dbprefix‘] = ""; $db[‘test‘][‘pconnect‘] = TRUE; $db[‘test‘][‘db_debug‘] = FALSE; $db[‘test‘][‘cache_on‘] = FALSE; $db[‘test‘][‘cachedir‘] = ""; $db[‘test‘][‘char_set‘] = "utf8"; $db[‘test‘][‘dbcollat‘] = "utf8_general_ci"; $db[‘test‘][‘swap_pre‘] = ""; $db[‘test‘][‘autoinit‘] = TRUE; $db[‘test‘][‘stricton‘] = FALSE;
记得把配置中的pconnect改为false,其他的不变
加载数据库
$this->db1=$this->load->database(‘default‘,TRUE); $this->db2=$this->load->database(‘test‘,TRUE);
调用数据库函数
$this->db1->get(‘news‘)->result-array(); $this->db1->where(‘name‘,‘test‘); $this->db1->get(‘news‘)->result-array();
这就可以实现连接多个数据库了
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原文地址：http://www.cnblogs.com/liuyfl/p/4597852.html
