Embedly\Embedly::apicall PHP Method

    public function apicall($version, $action, $params)
    {
        $justone = is_string($params);
        $params = self::paramify($params);
        if (!array_key_exists('urls', $params)) {
            $params['urls'] = array();
        }
        if (!is_array($params['urls'])) {
            $urls = array($params['urls']);
            $params['urls'] = $urls;
        }
        if (array_key_exists('url', $params) && $params['url']) {
            array_push($params['urls'], $params['url']);
            unset($params['url']);
        }
        $rejects = array();
        if ($this->key) {
            $params['key'] = $this->key;
        } else {
            $regex = $this->services_regex();
            foreach ($params['urls'] as $i => $url) {
                $match = preg_match($regex, $url);
                if (!$match) {
                    unset($params['urls'][$i]);
                    $rejects[$i] = (object) array('error_code' => '401', 'error_message' => 'This service requires an Embedly key', 'type' => 'error');
                }
            }
        }
        $result = array();
        $merged_result = array();
        if (sizeof($rejects) < sizeof($params['urls'])) {
            if (count($params['urls']) > 20) {
                throw new \Exception(sprintf("Max of 20 urls can be queried at once, %s passed", count($params['urls'])));
            }
            $path = sprintf("%s/%s", $version, $action);
            $url_parts = $this->parse_host($this->hostname);
            $apiUrl = sprintf("%s%s?%s", $url_parts['url'], $path, $this->q($params));
            $ch = curl_init($apiUrl);
            $this->setCurlOptions($ch, array(sprintf('Host: %s', $url_parts['hostname']), sprintf('User-Agent: %s', $this->user_agent)));
            $response_arr = $this->curlExec($ch);
            $http_code = $response_arr["http_code"];
            $res = $response_arr["response"];
            $result = json_decode($res) ?: array();
            // if there's an http error code, return the error in all results
            if ($http_code !== 200) {
                // if error is returned in response use that one otherwise create new one
                if (count($result) > 0) {
                    $error_obj = $result;
                    // all results will be in rejected array
                    $result = array();
                } else {
                    $error_obj = (object) array('error_code' => $http_code, 'error_message' => sprintf('HTTP error code %s', $http_code), 'type' => 'error');
                }
                // set errors in every result object
                foreach ($params["urls"] as $i => $url) {
                    $rejects[$i] = $error_obj;
                }
            }
        }
        foreach ($result as $i => $v) {
            if (array_key_exists($i, $rejects)) {
                array_push($merged_result, array_shift($rejects));
            }
            array_push($merged_result, $v);
        }
        // grab any leftovers
        foreach ($rejects as $obj) {
            array_push($merged_result, $obj);
        }
        if ($justone) {
            return array_shift($merged_result);
        }
        return $merged_result;
    }