code/thirdparty/gapi.php
private function fopenRequest($get_variables=null, $post_variables=null, $headers=null) {
    $http_options = array('method'=>'GET', 'timeout'=>3);

    $string_headers = '';
    if (is_array($headers)) {
      foreach ($headers as $key => $value) {
        $string_headers .= "$key: $value\r\n";
      }
    }

    if (is_array($get_variables)) {
      $get_variables = '?' . str_replace('&amp;', '&', urldecode(http_build_query($get_variables, '', '&')));
    }
    else {
      $get_variables = null;
    }

    if (is_array($post_variables)) {
      $post_variables = str_replace('&amp;', '&', urldecode(http_build_query($post_variables, '', '&')));
      $http_options['method'] = 'POST';
      $string_headers = "Content-type: application/x-www-form-urlencoded\r\n" . "Content-Length: " . strlen($post_variables) . "\r\n" . $string_headers;
      $http_options['header'] = $string_headers;
      $http_options['content'] = $post_variables;
    }
    else {
      $post_variables = '';
      $http_options['header'] = $string_headers;
    }

    $context = stream_context_create(array('http'=>$http_options));
    $response = @file_get_contents($this->url . $get_variables, null, $context);

    return array('body'=>$response!==false?$response:'Request failed, consider using php5-curl module for more information.', 'code'=>$response!==false?'200':'400');
  }
private function fopenRequest($get_variables=null, $post_variables=null, $headers=null) {
    $http_options = array('method'=>'GET', 'timeout'=>3);

    $string_headers = '';
    if (is_array($headers)) {
      foreach ($headers as $key => $value) {
        $string_headers .= "$key: $value\r\n";
      }
    }

    if (is_array($get_variables)) {
      $get_variables = '?' . str_replace('&amp;', '&', urldecode(http_build_query($get_variables, '', '&')));
    }
    else {
      $get_variables = null;
    }

    if (is_array($post_variables)) {
      $post_variables = str_replace('&amp;', '&', urldecode(http_build_query($post_variables, '', '&')));
      $http_options['method'] = 'POST';
      $string_headers = "Content-type: application/x-www-form-urlencoded\r\n" . "Content-Length: " . strlen($post_variables) . "\r\n" . $string_headers;
      $http_options['header'] = $string_headers;
      $http_options['content'] = $post_variables;
    }
    else {
      $post_variables = '';
      $http_options['header'] = $string_headers;
    }

    $context = stream_context_create(array('http'=>$http_options));
    $response = @file_get_contents($this->url . $get_variables, null, $context);

    return array('body'=>$response!==false?$response:'Request failed, consider using php5-curl module for more information.', 'code'=>$response!==false?'200':'400');
  }
HTTP request using native PHP fopen function
Requires PHP openSSL

@param Array $get_variables
@param Array $post_variables
@param Array $headers