我正在使用codeigniter。在我的控制器文件中，我需要获取雇员的雇用日期和终止日期，并检查雇用日期是否小于终止日期。 我的控制器代码如下：
public function add()
{
//if save button was clicked, get the data sent via post
if ($this->input->server('REQUEST_METHOD') === 'POST')
{
//$this->load->library('session');
//$this->session->unset_userdata('tax_details');
//form validation
$this->form_validation->set_rules('id', 'id');
$this->form_validation->set_rules('emp_first_name', 'emp_first_name','alpha');
$this->form_validation->set_rules('emp_last_name', 'emp_last_name','alpha');
$this->form_validation->set_rules('emp_email_id', 'emp_email_id');
$this->form_validation->set_rules('emp_emergency_contact', 'emp_emergency_contact');
$this->form_validation->set_rules('category', 'category');
$this->form_validation->set_rules('emp_id_card', 'emp_id_card');
$this->form_validation->set_rules('emp_time_in', 'emp_time_out');
$this->form_validation->set_rules('emp_date_of_hire', 'emp_date_of_hire');
$this->form_validation->set_rules('emp_date_of_termination', 'emp_date_of_termination');
$this->form_validation->set_rules('emp_date_of_rehire', 'emp_date_of_rehire');
$this->form_validation->set_rules('emp_reference_num', 'emp_reference_num');
$this->form_validation->set_rules('emp_service_limitation', 'emp_service_limitation');
$this->form_validation->set_rules('chair_renter', 'chair_renter');
$this->form_validation->set_error_delimiters('<div class="alert alert-error"><a class="close" data-dismiss="alert">×</a><strong>', '</strong></div>');
//if the form has passed through the validation
if ($this->form_validation->run())
{
$data_to_store = array(
'id' => $this->input->post('id'),
'emp_first_name' => $this->input->post('emp_first_name'),
'emp_last_name' => $this->input->post('emp_last_name'),
'emp_email_id' => $this->input->post('emp_email_id'),
'emp_emergency_contact' => $this->input->post('emp_emergency_contact'),
'category' => $this->input->post('category'),
'emp_id_card' => $this->input->post('emp_id_card'),
'emp_time_in' => $this->input->post('emp_time_in'),
'emp_time_out' => $this->input->post('emp_time_out'),
'emp_date_of_hire' => $this->input->post('emp_date_of_hire'),
'emp_date_of_termination' => $this->input->post('emp_date_of_termination'),
'emp_date_of_rehire' => $this->input->post('emp_date_of_rehire'),
'emp_reference_num' => $this->input->post('emp_reference_num'),
'emp_service_limitation' => $this->input->post('emp_service_limitation'),
'chair_renter' => $this->input->post('chair_renter'),
);
if($data_to_store['emp_date_of_hire'] != NULL || $data_to_store['emp_date_of_termination'] != NULL || $data_to_store['emp_date_of_rehire'] != NULL)
{
$data_to_store['emp_date_of_hire'] = str_replace('/', '-', $data_to_store['emp_date_of_hire'] );
$date1 = date("Y-m-d", strtotime($data_to_store['emp_date_of_hire']));
$data_to_store['emp_date_of_termination'] = str_replace('/', '-', $data_to_store['emp_date_of_termination'] );
$date2 = date("Y-m-d", strtotime($data_to_store['emp_date_of_termination']));
$data_to_store['emp_date_of_rehire'] = str_replace('/', '-', $data_to_store['emp_date_of_rehire'] );
$date3 = date("Y-m-d", strtotime($data_to_store['emp_date_of_rehire']));
if($date1 < $date2 && $date1 < $date3)
{
if($this->employee_model->store_employee($data_to_store)){
$data['flash_message'] = TRUE;
$this->session->set_flashdata('flash_message', 'updated');
//$this->session->set_userdata('tax_details', ['total'=>$this->input->post('id'),"tax"=>$this->input->post('emp_service_limitation'),"renter"=>$this->input->post('chair_renter')]);
//redirect(base_url().'admin/employee/view');
if($data_to_store['chair_renter'] == "yes")
{
$datas = array(
'emp_id'=>$data_to_store['id'],
'emp_first_name'=>$data_to_store['emp_first_name'],
'emp_last_name'=>$data_to_store['emp_last_name'],
'category'=>$data_to_store['category'],
);
$this->employee_model->save_chair_renter($datas);
}
}else{
$data['flash_message'] = FALSE;
}
}
else
{
$data['flash_message'] = FALSE;
}
//if the insert has returned true then we show the flash message
}
else
{
if($this->employee_model->store_employee($data_to_store)){
$data['flash_message'] = TRUE;
$this->session->set_flashdata('flash_message', 'updated');
//$this->session->set_userdata('tax_details', ['total'=>$this->input->post('id'),"tax"=>$this->input->post('emp_service_limitation'),"renter"=>$this->input->post('chair_renter')]);
//redirect(base_url().'admin/employee/view');
if($data_to_store['chair_renter'] == "yes")
{
$datas = array(
'emp_id'=>$data_to_store['id'],
'emp_first_name'=>$data_to_store['emp_first_name'],
'emp_last_name'=>$data_to_store['emp_last_name'],
'category'=>$data_to_store['category'],
);
$this->employee_model->save_chair_renter($datas);
}
}else{
$data['flash_message'] = FALSE;
}
}
}
}
//fetch manufactures data to populate the select field
$data['designation'] = $this->designation_model->get_designation();
//load the view
$data['main_content'] = 'admin/employee/add';
$this->load->view('includes/template', $data);
}
我需要检查日期字段是否为空。在我的视图文件中，我得到如下所示的输入。
<input type="date" name="emp_date_of_hire" value="<?php echo set_value('emp_date_of_hire'); ?>">
<input type="date" name="emp_date_of_termination" value="<?php echo set_value('emp_date_of_termination'); ?>">
如何编码？有人能帮助我吗？