(PHP 5 >= 5.5.0, PHP 7, PHP 8)
This class or CURLStringFile should be used to upload a file with CURLOPT_POSTFIELDS.
CURLOPT_POSTFIELDS
Unserialization of CURLFile instances is not allowed. As of PHP 7.4.0, serialization is forbidden in the first place.
$filename
$mime_type
null
$posted_filename
Name of the file to be uploaded.
MIME type of the file (default is application/octet-stream).
application/octet-stream
The name of the file in the upload data (defaults to the name property).