kalmargabor/crawler-check

Verify Googlebot (or others) by their IP addresses

Crawler check

Composer install

composer require kalmargabor/crawler-check

Examples

$crawlerCheck = new \Kalmargabor\CrawlerCheck\CrawlerCheck();

$ipToCheck = 'ip.address.ip.address';

var_dump($crawlerCheck->isValid($ipToCheck)); 

Google help on verification

https://support.google.com/webmasters/answer/80553, _(*1)