无法在 codeigniter 中设置新的图像名称

Question

我在 codeigniter 中上传了多个图像，但是当我使用此代码设置新名称时 $_FILES['attachment']['name']= $filename;

我明白了

您尝试上传的文件类型不允许。

请提出解决此问题的解决方案。

public function do_upload()
{
    if (($_SERVER['REQUEST_METHOD']) == "POST") {
        $count = count($_FILES['attach_file']['name']);
        $files = $_FILES;
        for($i=0; $i<$count; $i++){
        $filename = $_FILES['attach_file']['name'][$i];
        $filename = strstr($filename, '.', true);
        $email    = $this->session->userdata('email');
        $filename = strstr($email, '@', true)."_".$filename;
        $filename = strtolower($filename);

        $_FILES['attachment']['name']= $filename;
        $_FILES['attachment']['type']= $_FILES['attach_file']['type'][$i];
        $_FILES['attachment']['tmp_name']= $_FILES['attach_file']['tmp_name'][$i];
        $_FILES['attachment']['error']= $_FILES['attach_file']['error'][$i];
        $_FILES['attachment']['size']= $_FILES['attach_file']['size'][$i];    
        $config['upload_path']   = FCPATH .'./assets/attachments/new/';
        $config['allowed_types'] = 'pdf|doc|docx|bmp|gif|jpg|jpeg|jpe|png';
        $config['max_size']      = 0;
        $config['max_width']     = 0;
        $config['max_height']    = 0;
        $config['encrypt_name']  = true; 
        $config['file_ext_tolower'] = true; 
        $config['overwrite']     = false;
        $this->load->library('upload', $config);
        if (!$this->upload->do_upload('attachment')) {
            $data['exception'] = $this->upload->display_errors();
            $data['status'] = false;
            echo json_encode($data);
        } else {
            $upload =  $this->upload->data();
            $data['message'] = 'upload_successfully';
            $data['filepath'] = './assets/attachments/'.$upload['file_name'];
            $data['status'] = true;
            echo json_encode($data);
        }
    }  
    }
}

Answer 1

注意：-您将再次分配相同的变量名$filename

请更改：-

$filename = $_FILES['attach_file']['name'][$i];
$filename = strstr($filename, '.', true);
$email    = $this->session->userdata('email');
$filename = strstr($email, '@', true)."_".$filename;
$filename = strtolower($filename);

$_FILES['attachment']['name']= $filename;

到：-

$filename = $_FILES['attach_file']['name'][$i];
$filename1 = strstr($filename, '.', true);
$email    = $this->session->userdata('email');
$filename2 = strstr($email, '@', true)."_".$filename1;
$filename3 = strtolower($filename2);