一次简单的数据库追溯

引子 .今天排查代码,一路飞,到数据库,

<span>1</span><span>$this->slave()->select('sina_user_id, sina_nickname, password')->from(self::Table_User_Info)</span>

显然到这里确定了表.user_info;

这个文件没有load->database();

顾名: slave()  是从库,追溯slave() 果然在这里组合了库名字符串,

<span>1</span><span>    public function slave($dbName = 'default')
</span><span>2</span>     { 
<span>3</span>     }

func 里面load->database();

查loader里的database();有下面这句,

<span>1</span><span><strong>require</strong>_once(BASEPATH.'database/DB.php');</span>

找到DB.php;

<span>1</span><span>    if ( ! defined('ENVIRONMENT') OR ! file_exists($file_path = BASEPATH.'config/'.ENVIRONMENT.'/database.php'))</span>

这个文件里面多个数据库属性的引入,详见核心文件分析.

终于找到了database.php 位置

<span> 1</span><span>// Default DB Config
</span><span> 2</span><span>$db['default_master']['hostname'] = 'localhost';
</span><span> 3</span><span>$db['default_master']['username'] = 'admin';
</span><span> 4</span><span>$db['default_master']['password'] = '12345678';
</span><span> 5</span><span>$db['default_master']['database'] = ' ';
</span><span> 6</span><span>$db['default_master']['port'] = 3306;
</span><span> 7</span><span>$db['default_master']['dbdriver'] = 'mysql';
</span><span> 8</span><span>$db['default_master']['pconnect'] = FALSE;
</span><span> 9</span><span>$db['default_master']['db_debug'] = TRUE;
</span><span>10</span><span>$db['default_master']['cache_on'] = FALSE;
</span><span>11</span><span>$db['default_master']['cachedir'] = '';
</span><span>12</span><span>$db['default_master']['char_set'] = 'utf8';
</span><span>13</span><span>$db['default_master']['dbcollat'] = 'utf8_general_ci';
</span><span>14</span><span>$db['default_master']['swap_pre'] = '';
</span><span>15</span><span>$db['default_master']['autoinit'] = TRUE;
</span><span>16</span><span>$db['default_master']['stricton'] = FALSE;</span>

追溯数据库完毕.

以上就介绍了一次简单的数据库追溯，包括了require方面的内容，希望对PHP教程有兴趣的朋友有所帮助。