mysql - PHP insert data in database -

i've save function in php

$post = $this->request->post('event');      $events = orm::factory('tasks_manage')->values();          try {              $return = array();             foreach ($events $event) {                  $title = $event['name']['taskname'];                 $time = $event['time'];                  $return[] = $event;               $event->save();          }             return array(                  'return' => $return; 

data, existing in headers array in response empty. please help

$conn->insert('user', array('username' => 'jwage')); 

// insert user (username) values (?) (jwage)