CodeIgniter 上传功能，有时不起作用答案

【问题标题】：CodeIgniter upload function, sometime not worksCodeIgniter 上传功能，有时不起作用
【发布时间】：2016-03-28 16:39:32
【问题描述】：

我在使用 codeigniter 上传功能时遇到问题。该功能运行良好，但有时不起作用并且没有任何错误信息。

控制器中的sn-p

...
        function add_process() {
                $data['title'] = anchor('event/','<b>EVENT</b>', array('class' => 'back'));
                $data['subtitle'] = ' / Add Event';
                $data['main_view'] = 'event/event_form';
                $data['form_action'] = site_url('event/add_process');       

                $this->form_validation->set_rules('eventName', 'Event Name', 'required');
                $this->form_validation->set_rules('eventDate', 'Event Date', 'required');
                if (empty($_FILES['eventImage']['name'])){
                    $this->form_validation->set_rules('eventImage', 'Event Image', 'required');     
                }               

                if ($this->form_validation->run() == TRUE) {    
                    $config['upload_path'] = './images/event/';
                    $config['allowed_types'] = 'jpg|jpeg|png';          
                    //$config['max_width'] = '3000';
                    //$config['max_height'] = '3000';

                    $this->load->library('upload', $config);

                    $this->upload->do_upload('eventImage');
                    $eventImage = $this->upload->data();

                    $event = array( 'eventName'         => $this->input->post('eventName'),
                                    'eventDate'         => date('Y-m-d', strtotime($this->input->post('eventDate'))),
                                    'eventDescriptions' => $this->input->post('eventDescriptions'),
                                    'eventImage'        => 'images/event/'.$eventImage['file_name'],
                                    'isActive'          => $this->input->post('isActive')
                                );
                    $this->Event_model->add($event);            

                    $this->session->set_flashdata('message', '1 record was successfully added!');
                    redirect('event/add');      

                } else  {           
                    $this->load->view('admin/admin_main', $data);
                }
            } 
    ...

你能告诉我，我在这里缺少什么吗？

【问题讨论】：

将$this->upload->do_upload('eventImage'); 替换为if ( ! $this->upload->do_upload('eventImage')) { $error = array('error' => $this->upload->display_errors()); var_dump($error); } 看看你有什么错误。
啊，我明白了，这是为了捕捉错误，对吧？如果函数显示错误，我会通知您。谢谢@Mirceac21
其实已经找到问题了，有人把$config['max_width'] = '3000'的评论标签去掉了。因此，当尝试上传巨大的图像时，就会出现问题。 PS：而那个人就是我，多么...

标签： php codeigniter image-uploading

【解决方案1】：

替换这个

$this->Event_model->add($event);            

$this->session->set_flashdata('message', '1 record was successfully added!');
redirect('event/add');

到这里

if ($this->Event_model->add($event)) {
    $this->session->set_flashdata('message', '1 record was successfully added!');
    redirect('event/add'); 
}

【讨论】：