TP框架中的增删改查

一些简单的增删改查语句

    <?php
    // 本类由系统自动生成，仅供测试用途
    class IndexAction extends Action {
        public function index(){
            $user=M("User");
            $data = array(
                "usernames" => "php100",
                "password" => md5("php200"),
                 );
            //成功则返回ID，失败则返回false,会过滤字段
            //echo $user->add($data);
            //直接用add也可以但是不会过滤字段
            echo $user->data($data)->add();
            echo $user->getLastSql();
        }
        //批量插入,字段必须一致
        public function addALL(){
            $user=M("User");
            $data=array(
                array("usernames"=>"123","password"=>"aaa1"),
                array("usernames"=>"456","password"=>"aaa2"),
                array("usernames"=>"789","password"=>"aaa3"),
                );
            dump($user->addALL($data));
        }
        //查询-select
        //查询所有符合条件的记录
        public function sel(){
            $user=M("User");
            //select()同样支持参数，比如输入10则为第10条
            $userlist=$user->where("id=10")->select();
            dump($userlist);
        }
        //查询-find
        //查询符合条件记录的第N调,默认为1
        public function find(){
            $user=M("User");
            //find()括号是可以给参数的比如10则读取第10条数据
            $userlist=$user->find();
            dump($userlist);
        }
        //查询-getfield
        public function getfield(){
            $user=M("user");
            //默认把第一个当成数组的下标,一般结合连贯操作
            //后跟数字6则只读取6条，
            $list=$user->getfield("id,usernames,password",6);
            print_r($list);
        }
        //更新save
        //返回的是影响的行数
        public function up(){
            $user=M("user");
            //下边的ID不一定为ID，一般为主键
            $data = array("usernames" =>"pog");
            $list = $user->where("id=10")->save($data);
            print_r($user->find(10));    //打印出第10条记录
            dump($list);
            //为下边的批量更新做准备
            $data=array(
                array("usernames"=>"y123","password"=>"aaa1","id"=>"21"),
                array("usernames"=>"y456","password"=>"aaa2","id"=>"22"),
                array("usernames"=>"y789","password"=>"aaa3","id"=>"23"),
                );
                $this->upall($data);
                dump($user->select());
        }
        //批量更新
        //自定义函数
        public function upall($arr){
            $user=M("user");
            foreach ($arr as $key => $value) {
                $user->save($value);
            }
        }
        //更新字段 setfield
        public function setField()
        {
            $user=M("user");
            $data = array("password" => "ok" );
            $user->where("id=20")->setField($data);
            dump($user->find(20));
        }
        //自增、自减
        //默认以1自增自减setInc setDec
        public function set(){
            $user=M("user");
            $user->where("id=25")->setDec("regtime",10);
            dump($user->find(25));
        }
        //数据删除方法 delete
        //小心操作id=3 一般为一条数据
        public function del(){
            $user=M("user");
            $user->where("id=3")->delete();
            dump($user->getField("id,usernames",5));
        }
    }