PHP Custom model Additions and deletions

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<?phpnamespace app\index\controller;use app\common\model\user;use app\common\model\userinfo;class Index{Public        function index () {/*//static Access $user = User::get (1);        Gets the data for a record dump ($user->getdata ());        Gets the value of a property in the record dump ($user->name);        Helper method Dump (model (' user ')->find (1)->getdata ());        Direct instantiation of $user = new User ();        Dump ($user->find (1)->getdata ());        */$user = Userinfo::get (1);        Dump ($user->getdata ());        $user = Userinfo::get (1);        Dump ($user->getdata ());    return "THINKPHP5"; }//How to add/Update data public Function SaveData () {//Add a new data//$data = [//' name ' = ' = ' Jike            Xueyuan ',//' password ' + MD5 (123456),//' age ' + 18,//' sex ' = ' male ',//        ' Status ' = 1,//' create_time ' + Time (),//' update_time ' + 0,//]; $user = New User ();//Echo $user->save ($data); Added multiple data for ($i = 0; $i < $i + +) {$data [$i] = [' name ' = ' = ' Jikexueyu An '.                $i, ' Password ' and MD5 (123456), ' age ' and $i, ' sex ' and ' male ',        ' Status ' = 1, ' Create_time ' + Time (), ' update_time ' = 0,];    } $user->saveall ($data);        }//Data update public Function UpdateData () {///query after the update operation $user = User::get (16);        $user->name = ' Wangjialin ';        echo $user->save ();        Update method for directly using the database class update $user = New User ();        echo "return:". $user->where (' id=18 ')->update ([' name ' = ' WJL ']);        The SaveAll method can be used for batch updates//[id=>1]}//Data query Public function getdatalist () {//unconditionally querying all data// $list = User::all ();//foreach ($list as $key = + $val)//{//Dump ("ID:". $val->id. ", Name:". $val->name. ", Age:". $val->age)//}//Condition list Query $list = User::all (' 18        , 22 '); foreach ($list as $key = = $val) {dump ("ID:". $val->id. ", Name:". $val->name. "," Age: ". $val->age)        ;        }}//Data delete public function Deldata () {echo User::d Estroy (18);    echo model (' user ')->where (' id=16 ')->delete (); }}