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<?php /** * This helper builds the GroupsToDisplay object for a /mail/send API call * * PHP Version - 5.6, 7.0, 7.1, 7.2 * * @package SendGrid\Mail * @author Elmer Thomas <dx@sendgrid.com> * @copyright 2018 SendGrid * @license https://opensource.org/licenses/MIT The MIT License * @version GIT: <git_id> * @link http://packagist.org/packages/sendgrid/sendgrid */ namespace SendGrid\Mail; /** * This class is used to construct a GroupsToDisplay object for * the /mail/send API call * * @package SendGrid\Mail */ class GroupsToDisplay implements \JsonSerializable { /** @var $groups_to_display int[] An array containing the unsubscribe groups that you would like to be displayed on the unsubscribe preferences page. Maximum of 25 */ private $groups_to_display; /** * Optional constructor * * @param int[]|int|null $groups_to_display An array containing * the unsubscribe groups * that you would like to * be displayed on the * unsubscribe preferences * page. Maximum of 25 */ public function __construct($groups_to_display = null) { if (isset($groups_to_display)) { $this->setGroupsToDisplay($groups_to_display); } } /** * Add a group to display on a GroupsToDisplay object * * @param int|int[] $groups_to_display The unsubscribe group(s) * that you would like to be * displayed on the unsubscribe * preferences page * * @throws TypeException * @return null */ public function setGroupsToDisplay($groups_to_display) { if (!is_array($groups_to_display)) { throw new TypeException('$groups_to_display must be an array.'); } if (is_array($groups_to_display)) { $this->groups_to_display = $groups_to_display; } else { $this->groups_to_display[] = $groups_to_display; } } /** * Return the group(s) to display on a GroupsToDisplay object * * @return int[] */ public function getGroupsToDisplay() { return $this->groups_to_display; } /** * Return an array representing a GroupsToDisplay object for the SendGrid API * * @return null|array */ public function jsonSerialize() { return $this->getGroupsToDisplay(); } }