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Homephp教程php手册thinkphp动态创建数据表结构

业务需要每月新增一张表,以应对大量的数据情况,以下为thinkphp动态创建数据表结构源码
$table = 'activelog'. date('Ym');
$sql = "CREATE TABLE IF NOT EXISTS `$table` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`system` tinyint(4) NOT NULL COMMENT 'xxxxxx',
`pfid` smallint(4) NOT NULL,
`uid` int(11) NOT NULL,
.....
`update_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='活跃统计' AUTO_INCREMENT=1 ;";
M('', '', 'DB_CONFIG_ACTIVE')->execute($sql);//注意,这里创建表的话,第一个参数不要设置,不然会检测表信息,然表不存在,导致报错。


我们来一探究竟:

thinkphp3.2会默认开启数据表字段检测,在Model.class.php

查看源码
// 是否自动检测数据表字段信息
protected $autoCheckFields = true;
在db方法中,1409行, 有这样的代码:

if(!empty($this->name) && $this->autoCheckFields) $this->_checkTableInfo();
$this->name 在构造方法中设置,也就是我们M('','','XXXX') 第一个参数。 参数3为数据库连接信息

今天在写业务逻辑的时候碰到的,顺便写下来,希望能够帮到大家。

您也可以参考我的个人网站: http://www.isbala.com/article/270.html

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