Login demo code Example of how you can add callback function with login functionality

  
                            $pdo_crud = new PDOCrud();
                            // we need to add actions 
                            // before checking the login data if you want to peform any operation like password encryption etc/(optional)
                             $pdo_crud->addCallback("before_select", "beforeloginCallback");
                           // after login, we generally want to save the data in session
                             $pdo_crud->addCallback("after_select", "afterLoginCallBack");
                             //only required fields to be display on form
                             $pdo_crud->formFields(array("email", "password"));
                            ///redirect to some page after login (optional)
                             $pdo_crud->formRedirection("http://localhost/school/index.php?page=student&operation=add");
                            // set db table to your user table and call render function with select form
                             echo $pdo_crud->dbTable("users")->render("selectform");


                        //After this add following code in script/pdocrud.php. This is basically callback functions so must be present in the script/pdocrud.php
                        
                        //example of how to add action function
                        function beforeloginCallback($data, $obj) {  
                            //do something like if your passwords are md5 encrypted then change the value
                            $data["users"]["password"] = md5($data["users"]["password"]);
                            return $data;
                        }



                        function afterLoginCallBack($data, $obj) {
                            @session_start();
                            if (count($data)) {
                            //save data in session
                                $_SESSION["data"] = $data;
                            }
                            else{
                                //no record found so don't redirect
                                $obj->formRedirection("");
                            }
                        }