ThinkPHP整合Smarty模板引擎的使用以及查询方法汇总
其实说到整合smarty我们根本就没有作什么,要做的主要还是对于模板分配各种变量的使用,这才是重点,其次还有一些配置信息要自己去填写;先说一下配置,同样的,在主目录的common下面的config文件,把配置信息写入里面就可以了,其中主要有下面一下的配置信息。
'TMPL_ENGINE_TYPE' => 'Smarty',
//'TMPL_L_DELIM' => ' //'TMPL_R_DELIM' => '}>', // 模板引擎普通标签结束标记
//上面两个配置不太好使
//如果出现冲突用{literal}{/literal}包起来,说明不解析这里面的模板
利用上面的信息就可以直接使用smarty模板引擎了,至于注意的方面,在注释里面都有说明。
不多说了,说说一下select方法,这个方法就是为数据库查询而生的。单纯的使用select方法就是取出所有的数据,但是,我们在很多的时候不需要浪费这个大的资源,所以,要结合一些查询条件才能更让select更好的发挥。
1:结合字段查询field:
$t=D('User');
// $info=$t->select();
$info=$t->field("name")->select();
$this->assign('info',$info);
$this->display();
这样我们取到的就只有name值。
2;group分组查询,$info=$t->field("name")->group('name')->select();
3:排序查询:$info=$t->order("字段")->select();升序查询。
4:也可以去选择数据表$info=$t->table('表名')->order("字段")->select();
5:limit:限制查询条数。
6:直接查询主键select("主键值1,主键值2");
7:find:返回一维数组的结果find('主键值');
8:having:在只有select查询到的情况下才能使用。
顺便还有一些聚合函数:sum,count,max,avg等是直接操作数据对象的。

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PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

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