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);