Carousel Mobile App Ads

include './vendor/autoload.php';

use FacebookAds\Api;  
use FacebookAds\Object\AdCreative;  
use FacebookAds\Object\Fields\AdCreativeFields;  
use FacebookAds\Object\Fields\ObjectStorySpecFields;  
use FacebookAds\Object\Fields\ObjectStory\LinkDataFields;  
use FacebookAds\Object\Fields\ObjectStory\AttachmentDataFields;  
use FacebookAds\Object\AdGroup;  
use FacebookAds\Object\Fields\AdGroupFields;  

$APP_URL = 'https://itunes.apple.com/us/app/facebook/id284882215';
$child_attachments = array();

for($i = 0; $i <= 10; $i++) {
$child_attachments[] = array(
AttachmentDataFields::LINK => '<LINK_$i>',
AttachmentDataFields::PICTURE => '<IMAGE_URL_$i>',
AttachmentDataFields::CALL_TO_ACTION => array(
'type' => 'USE_MOBILE_APP',
'value' => array('app_link' => '<DEEP_LINK_$i>', 'link_title' => '<LINK_TITLE_$i>'),
),
);
}

$object_story_spec = array(
ObjectStorySpecFields::PAGE_ID => <PAGE_ID>,
ObjectStorySpecFields::LINK_DATA => array(
LinkDataFields::MESSAGE => 'My description',
LinkDataFields::LINK => '<APP_STORE_URL>',
LinkDataFields::CAPTION => 'WWW.ITUNES.COM',
LinkDataFields::CHILD_ATTACHMENTS => $child_attachments,
LinkDataFields::MULTI_SHARE_OPTIMIZED => true,
)
);

$creative = new AdCreative(null, 'act_<AD_ACCOUNT_ID>');

$creative->setData(array(
AdCreativeFields::NAME => 'Carousel app ad',
AdCreativeFields::OBJECT_STORY_SPEC => $object_story_spec,
));

$creative->create();
$creative_id = $creative->id;
echo 'Creative ID: '.$creative_id ."\n";