empty response when using CURLOPT_HEADERFUNCTION

Question

I'm trying to get response headers using CURLOPT_HEADERFUNCTION

curl_setopt($ch, CURLOPT_HEADERFUNCTION, function($curl, $headerLine) use($date) {
   file_put_contents('/tmp/response-headers.log', $date . " " . print_r($headerLine, true), FILE_APPEND);
});

$response = curl_exec($ch);

Received header is HTTP/1.1 200 OK, but $response is empty. However, when I comment out the curl_setopt function above, everything works fine and I get full response body.

How can I receive full body while dumping headers to file?

TRiG · Accepted Answer · 2016-06-13 13:34:25Z

1

The documentation for CURLOPT_HEADERFUNCTION says

A callback accepting two parameters. The first is the cURL resource, the second is a string with the header data to be written. The header data must be written by this callback. Return the number of bytes written.

Your function does not return the number of bytes written.

answered Jun 13, 2016 at 13:34

TRiG

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