Handy "chain()" helper method for making non-fluent classes/objects fluent.

chain_helper.php

<?php

function chain($object)
{
    return new class ($object) {
        public function __construct($object)
        {
            $this->wrapped = $object;
        }

        public function __call($method, $params)
        {
            throw new BadMethodCallException(sprintf(
                'Method %s::%s does not exist.', get_class($this->wrapped), $method
            ));

            $this->wrapped->{$method}(...$params);

            return $this;
        }
    };
}