You can now develop your AWS Elastic Beanstalk applications using PHP 7.2. The latest PHP version comes with numerous improvements and new features such as counting of non-countable objects, object typehint, new sodium extensions, and improved TLS constants to sane values. For the complete list of PHP 7.2 features, including a PHP migration guide visit the official PHP 7.2 release announcement. You can upgrade your existing AWS Elastic Beanstalk PHP environment using the Elastic Beanstalk console or through the AWS CLI and Elastic Beanstalk API. See Migrating an Environement to a New Configuration for additional details.