tag. */ class GravatarViewHelper extends AbstractTagBasedViewHelper { /** * Base url * * @var string */ const GRAVATAR_BASEURL = 'http://www.gravatar.com/avatar/'; /** * Base secure url * * @var string */ const GRAVATAR_SECURE_BASEURL = 'https://secure.gravatar.com/avatar/'; /** * @var string */ protected $tagName = 'img'; /** * Initialize arguments. * Size argument has no default value to prevent the creation of an unnecessary URI parameter. */ public function initializeArguments(): void { parent::initializeArguments(); $this->registerUniversalTagAttributes(); $this->registerArgument('email', 'string', 'Email address', true); $this->registerArgument('size', 'integer', 'Size in pixels, defaults to 80px [ 1 - 2048 ]'); $this->registerArgument( 'imageSet', 'string', 'Default image set to use. Possible values [ 404 | mm | identicon | monsterid | wavatar ] ' ); $this->registerArgument('maximumRating', 'string', 'Maximum rating (inclusive) [ g | pg | r | x ]'); $this->registerArgument( 'secure', 'boolean', 'If it is FALSE will return the un secure Gravatar domain (www.gravatar.com)', false, true ); } /** * Render method * * @return string */ public function render() { /** @var string $email */ $email = $this->arguments['email']; $size = $this->checkArgument('size'); $imageSet = $this->checkArgument('imageSet'); $maximumRating = $this->checkArgument('maximumRating'); $secure = (boolean) $this->arguments['secure']; $url = $secure ? static::GRAVATAR_SECURE_BASEURL : static::GRAVATAR_BASEURL; $url .= md5(strtolower(trim($email))); $query = http_build_query(['s' => $size, 'd' => $imageSet, 'r' => $maximumRating]); $url .= !empty($query) ? '?' . $query : ''; $this->tag->addAttribute('src', $url); $this->tag->forceClosingTag(true); return $this->tag->render(); } /** * Check if an argument is passed * * @return mixed */ private function checkArgument(string $argument) { return $this->arguments[$argument] ?? null; } }