Question

实际上，我正在尝试在codigniter中上传文件，但已经完成，但是我想如果文件在上传文件夹中已经存在，则会显示错误消息，请帮帮我。

这是我的代码控制器：

if($this->input->post('userSubmit'))
{
    //echo "comm";
    if(!empty($_FILES['file_upload']['name']))
    {
        // echo "coming";
        $config['upload_path'] = 'uploads/';
        $config['allowed_types'] = 'doc|docx|pdf';
        $config['file_name'] = $_FILES['file_upload']['name'];
        $this->load->library('upload',$config);
        $this->upload->initialize($config);
        if($this->upload->do_upload('file_upload'))
        {
            //echo "cominggggggg";die;
            $uploadData = $this->upload->data();
            $picture = $uploadData['file_name'];
            //print_r($picture);die;
        }
        else
        {
            $picture = '';
        }
    }
    else
    {
        $picture = '';
    }
}

Answer 1

您不需要初始化CI上传设置两次，而应使用./uploads/而不是uploads/。否则，只需检查即可：

    if ($this->input->post('userSubmit')) {
        if (!empty($_FILES['file_upload']['name'])) {
            if (is_file('./uploads/' . $_FILES['file_upload']['name'])) {
                show_error('File already exists!'); // function exits
            }
            $config['upload_path'] = './uploads/'; // correct way
            $config['allowed_types'] = 'doc|docx|pdf';
            $config['file_name'] = $_FILES['file_upload']['name'];
            $this->load->library('upload', $config);
            //$this->upload->initialize($config); you already did this ^
            if ($this->upload->do_upload('file_upload')) {
                $uploadData = $this->upload->data();
                $picture = $uploadData['file_name'];
            } else {
                $picture = '';
            }
        } else {
            $picture = '';
        }
    }

文件上载已经存在于编码中

1 个答案: