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The CURLFile class

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This class or CURLStringFile should be used to upload a file with CURLOPT_POSTFIELDS.

This class or CURLStringFile should be used to upload a file with CURLOPT_POSTFIELDS.

Unserialization of CURLFile instances is not allowed. As of PHP 7.4.0, serialization is forbidden in the first place.

class CURLFile { }

name: Name of the file to be uploaded.
mime: MIME type of the file (default is application/octet-stream).
postname: The name of the file in the upload data (defaults to the name property).

In this section

Create a CURLFile object

Get file name

Get MIME type

Get file name for POST

Set MIME type

Set file name for POST

Source: reference/curl/curlfile.xml · from the official PHP manual (php/doc-en)