curl/docs/libcurl/curl_formfree.md

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---
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Title: curl_formfree
Section: 3
Source: libcurl
See-also:
- curl_formadd (3)
- curl_mime_free (3)
- curl_mime_init (3)
Protocol:
- HTTP
Added-in: 7.1
---
# NAME
curl_formfree - free a previously build multipart form post chain
# SYNOPSIS
~~~c
#include <curl/curl.h>
void curl_formfree(struct curl_httppost *form);
~~~
# DESCRIPTION
This function is deprecated. Do not use. See curl_mime_init(3) instead!
curl_formfree() is used to clean up data previously built/appended with
curl_formadd(3). This must be called when the data has been used, which
typically means after curl_easy_perform(3) has been called.
The pointer to free is the same pointer you passed to the
CURLOPT_HTTPPOST(3) option, which is the *firstitem* pointer from
the curl_formadd(3) invoke(s).
**form** is the pointer as returned from a previous call to
curl_formadd(3) and may be NULL.
Passing in a NULL pointer in *form* makes this function return immediately
with no action.
# %PROTOCOLS%
# EXAMPLE
~~~c
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
struct curl_httppost *formpost;
struct curl_httppost *lastptr;
/* Fill in a file upload field */
curl_formadd(&formpost,
&lastptr,
CURLFORM_COPYNAME, "file",
CURLFORM_FILE, "nice-image.jpg",
CURLFORM_END);
curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
curl_easy_perform(curl);
/* then cleanup the formpost chain */
curl_formfree(formpost);
}
}
~~~
# DEPRECATED
Deprecated in 7.56.0.
# %AVAILABILITY%
# RETURN VALUE
None