Get Curl response headers as associative array

get_headers_from_curl_response.php

/**
     * Questo metodo prende l'header di una response e restituisce un array associativo
     * @param $response
     * @return array
     */
    private function get_headers_from_curl_response($response)
    {
        $headers = array();
        $header_text = substr($response, 0, strpos($response, "\r\n\r\n"));
        foreach (explode("\r\n", $header_text) as $i => $line) {
            if ($i === 0) {
                $headers['http_code'] = $line;
            } else {
                list ($key, $value) = explode(': ', $line);
                $headers[$key] = $value;
            }
        }
        return $headers;
    }