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我需要一些帮助，请挣扎，用AJAX上传和PHP
我上传装载有一个jQuery上传的帮助的图像，使用户可以得到它的图像的预览，我可以jCrop ，我的问题是，然后我需要保存的文件名，但我不能得到我的上传功能创建变量，
用户去通过量是如下的方法，
- 用户填写在他们的细节
- 用户选择S和图像抬起负荷并点击了上传按钮
- 上传功能运行，并且该图像被返回到图
- 用户选择将要剪切的图像的区域，并保存
- 用户进行填充形成了
- 保存的物品包括文件名
下面是我的PHP代码，我相信这是其中变量就不复存在了，不能在add函数中使用，
添加（） - 该函数的形式提交过
public function add()
{
$this->form_validation->set_rules('title','title', 'required|trim|min_length[2]');
$this->form_validation->set_rules('firstname', 'firstname', 'required|trim|alpha');
$this->form_validation->set_rules('surname', 'surname', 'required|trim|alpha');
$this->form_validation->set_rules('email', 'email address', 'required|trim|valid_email');
$this->form_validation->set_rules('postcode', 'postcode', 'required|trim|min_length[6]|max_length[9]');
$this->form_validation->set_rules('company_name', 'company_name', 'required|trim');
$this->form_validation->set_rules('company_summary', 'company_summary', 'required|trim|max_length[3000]');
$this->form_validation->set_rules('alternative_ads', 'alternative ads', 'required|trim|prep_url');
$this->form_validation->set_rules('facebook_url', 'Facebook URL', 'required|trim|prep_url');
$this->form_validation->set_rules('twitter_url', 'Twitter URL', 'required|trim|prep_url');
if($this->form_validation->run() == FALSE)
{
$this->template->build('admin/users/add');
}
else
{
//group the post data together soe that we can save the data easily.
$user = array(
'firstname' => $this->input->post('firstname'),
'surname' => $this->input->post('surname'),
'email' => $this->input->post('email'),
'postcode' => $this->input->post('postcode'),
'date_registered' => date("d-m-y h:i:s", time())
);
if(!$this->users_model->insert($this->input->xss_clean($user)))
{
$data['error'] = "We could not save you details, please try again";
$this->template->build('/users/admin/add', $data);
}
$employer = array(
'company_name' => $this->input->post('company_name'),
'company_summary' => $this->input->post('company_summary'),
'logo' => $this->file['file_name'],
'alternative_ads' => $this->input->post('alternative_ads'),
'facebook_url' => $this->input->post('facebook_url'),
'twitter_url' => $this->input->post('twitter_url'),
'user_id' => $this->db->insert_id()
);
if(!$this->employer_model->insert($this->input->xss_clean($employer)))
{
$data['error'] = "We could not save you details, please try again";
$this->template->build('/users/admin/add', $data);
}
else
{
die(print_r($this->file));
$this->load->library('image_lib');
$config['image_library'] = 'gd2';
$config['source_image'] = '/media/uploads/users/' . $this->file['file_name'];
$config['thumb_marker'] = TRUE;
$config['x_axis'] = $this->input->post('x');
$config['y_axis'] = $this->input->post('y');
$this->image_lib->initialize($config);
if (! $this->image_lib->crop())
{
$data['error'] = "We could not crop you image, please try again. If the problem persists please contact us";
$this->template->build('/admin/users/add', $data);
}
$this->session->set_flashdata('success', 'You have successfully added an employer');
redirect('/admin/users/manage');
}
}
}
这jQuery的上传者称
private function upload()
{
$config['upload_path'] = "./media/uploads/users";
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '1000';
$config['max_width'] = '1024';
$config['max_height'] = '768';
$config['encrypt_name'] = TRUE;
$this->load->library('upload');
$this->upload->initialize($config);
if (! $this->upload->do_upload('userfile'))
{
$error = array('error' => $this->upload->display_errors());
die(print_r($error));
}
else
{
$this->file = $this->upload->data();
$msg = $this->file;
echo json_encode($msg);
}
}
回顾一下我在上传设置$this->file（），并试图上传功能在add（）函数中使用它。