Make cURL output STDERR to file (or string)

Question

We\'re trying to debug some cURL errors on the server, and I would like to see the STDERR log. Currently, all we can see for our error is \"error code: 7\" and that we can\'

Answer 1

I needed to close the file before being able to read it, this worked for me:

$filename = 'curl.txt';
$curl_log = fopen($filename, 'w'); // open file for write (rw, a, etc didn't help)
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_STDERR, $curl_log);        

$result = curl_exec($ch);

fclose($curl_log);      
$curl_log = fopen($filename, 'r'); // open file for read
$output= fread($curl_log, filesize($filename));
echo $output;

(PHP 5.6.0, Apache/2.2.15)