PUT file (content) with PHP and cURL - php

Question

I'm trying to upload a file using cURL and the PUT method, I have already a function that works using fsockopen but i would like to migrate it to cURL.
The function that uses fsockopen receives the content of a file, the filename and the credentials for auth and make the request:
function put_file($content, $filename, $username, $pass)
{
$header = "PUT /upload?username=".urlencode(user_name)."&passwd=".urlencode($pass)."&filename=".urlencode($file_name)." HTTP/1.0\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($content) . "\r\n\r\n";
$fp = #fsockopen("ssl://URL", 443, $errno, $errstr, 30);
if(!$fp)
{
return "ERROR";
}
else
{
fputs ($fp, $header.$content);
while (!feof($fp))
{
$res .= fread ($fp, 1024);
}
fclose($fp);
}
}
I have been trying to migrate that function to cURL, but I don't know how to do it without the need of have a "real" file on my filesystem. The only cURL options I know for this are CURLOPT_INFILE and CURLOPT_INFILESIZE, but I don't have the file (and don't want to write it to disk and after open it).
What I need is to send the "content" of the file, just like the fsockopen version does. How can this be achieved with cURL?
Thank you in advanced.

Answer 1

You could use php://temp wrapper, which is a temporary file stream in PHP.
First you write the data to the stream (don't forget to use rewind() so cURL will read all data):
$fp = fopen("php://temp", "r+");
fputs($fp, $content);
rewind($fp);
Then when setting up the cURL just use:
curl_setopt($ch, CURLOPT_INFILE, $fp);
curl_setopt($ch, CURLOPT_INFILESIZE, strlen($content)); #adding missing bracket
And at the end close temp file handler (optional):
fclose($fp);