$this->load->library('upload');
$file_config = array(
'upload_path' => $dir,
'allowed_types' => 'csv',
'file_name' => strtoupper($this->input->post('class_name')) . '.csv',
'overwrite' => TRUE,
'max_size' => 2048,
'max_filename' => 128,
'remove_spaces' => FALSE
);
$this->upload->initialize($file_config);
// DEBUG
if (!$this->upload->do_upload('file'))
echo $this->upload->display_errors();
else
echo 'UPLOADED.';
由于某种原因，如果我输入'allowed_types' => '*',，它接受它并且工作得很好。但如果我只想要csv文件:'allowed_types' => 'csv',，当我上传csv文件时，它输出一个错误:The filetype you are attempting to upload is not allowed.
我怎么能解决这个问题，而不让所有类型的文件上传*，而不是只让csv文件上传?
Codeigniter文档说要使用文件的MIME类型，CSV的MIME类型是"text/CSV "，所以使用它而不是" CSV "。http://ellislab.com/codeigniter/user-guide/libraries/file_uploading.html