JeroenDesloovere\VCard\VCard::addMedia PHP Method

    private function addMedia($property, $url, $include = true, $element)
    {
        if ($include) {
            $value = file_get_contents($url);
            if (!$value) {
                throw new VCardMediaException('Nothing returned from URL.');
            }
            $value = base64_encode($value);
            $finfo = finfo_open(FILEINFO_MIME_TYPE);
            $mimetype = finfo_file($finfo, 'data://application/octet-stream;base64,' . $value);
            finfo_close($finfo);
            if (preg_match('/^image\\//', $mimetype) !== 1) {
                throw new VCardMediaException('Returned data aren\'t an image.');
            }
            $type = strtoupper(str_replace('image/', '', $mimetype));
            $property .= ";ENCODING=b;TYPE=" . $type;
        } else {
            if (filter_var($url, FILTER_VALIDATE_URL) !== FALSE) {
                $propertySuffix = ';VALUE=URL';
                $headers = get_headers($url);
                $imageTypeMatched = false;
                $fileType = null;
                foreach ($headers as $header) {
                    if (preg_match('/Content-Type:\\simage\\/([a-z]+)/i', $header, $m)) {
                        $fileType = $m[1];
                        $imageTypeMatched = true;
                    }
                }
                if (!$imageTypeMatched) {
                    throw new VCardMediaException('Returned data isn\'t an image.');
                }
                $propertySuffix .= ';TYPE=' . strtoupper($fileType);
                $property = $property . $propertySuffix;
                $value = $url;
            } else {
                $value = $url;
            }
        }
        $this->setProperty($element, $property, $value);
    }