Correcting teacher:PHPz
Correction status:qualified
Teacher's comments:
符号查询 [<,>,<=,>=,<>]
id大于2 和id小于7的
$res = Db::table('user')->where('id', '>', 2)->where('id', '<', 7)->select();
printf("<pre>%s</pre>", print_r($res, true));
id=2的
$res = Db::table('user')->where('id', '=', 3)->select();
printf("<pre>%s</pre>", print_r($res, true));
$res = Db::table('user')->where('name', 'like', '%编%')->select();
printf("<pre>%s</pre>", print_r($res, true));
//模糊取反
$res = Db::table('user')->where('name', 'notlike', '%编%')->select();
printf("<pre>%s</pre>", print_r($res, true));
$res = Db::table('user')->where('id', 'between', '2,7')->select();
printf("<pre>%s</pre>", print_r($res, true));
//区间取反
$res = Db::table('user')->where('id', 'not between', '2,7')->select();
printf("<pre>%s</pre>", print_r($res, true));
$res = Db::table('user')->field('id')->select();
printf("<pre>%s</pre>", print_r($res, true));
$res = Db::table('user')->order('id', 'DESC')->select();
printf("<pre>%s</pre>", print_r($res, true));
$res = Db::table('user')->limit(4, 10)->select();
printf("<pre>%s</pre>", print_r($res, true));
//page 专用分页查询
$res = Db::table('user')->page(0, 5)->select();
printf("<pre>%s</pre>", print_r($res, true));
//count
$res = Db::table('user')->count();
echo $res;
$res = Db::connect('lyb')->table('user_list')->select();
printf("<pre>%s</pre>", print_r($res, true));
//数据请求
// print_r(Request::get());
// print_r(Request::post());