$students = DB::select('select * from student');
插入
$bool = DB::insert('insert into student(name, age) values ("sean", 18)'); // 此处我使用双引号
$bool = DB::update('update student set age = 20 where name = "sean"');
$num = DB::delete('delete from student where id > 1001');
查询构造器简介:
Laravel查询构造器(query builder) 用来建立及执行数据库查找语法
使用PDO参数绑定,以保护应用程序免于sql注入,因此传入的参数不需要额外转义特殊字符
$bool = DB::table('student') -> insert (['name' => 'imooc', 'age' => 25]);
$bool = DB::table('student') -> where('id', 1001) -> update(['name' => 'imo']);