Multi Insert in Codeigniter

I want to make multiple insert in a table with an FK, but only enter a line, it will be because I do not count the $count . Here my code

Model

public function create($table,$data)
    {
    $query = $this->db->insert($table, $data);
     return $this->db->insert_id();
    }

Controller

 public function save($id)
    {
    $id_form = $id;
    $id_interversion = $this->model->create('mytable1',$data);
        $Inicio = $_POST['Inicio'];
        $Termino = $_POST['Termino'];
        $id_tecnico = $_POST['id_tecnico'];
        $count = count($_POST['id_tecnico']);
        $data2 =array();
                for ($i=0; $i <$count; $i++) {
                    $data2 = array(
                             'id_tecnico'=>$id_tecnico[$i],
                             'horaInicio'=>$Inicio[$i],
                             'Termino'=>$Termino[$i]
                     );
                 $this->model->create('mytable2',$data2);

                }


}

view

     <?php echo form_open("controller/save/{$data->id}"); ?>
      <?php for ($i=0; $i <2; $i++) { ?>
        <input type="text" name="id_tecnico[]"  value="" class="form-control">
          <input type="text" name="Inicio[]"  value="" class="form-control">
            <input type="text" name="Termino[]"  value="" class="form-control">
<?php } ?>

             <?php echo form_close(); ?>