ezsystems / ezpublish-kernel

        };

        // the callback code will return true as soon as an accepted value type is found

        if ($valueTypes & Specifications::TYPE_INTEGER) {

            $callback = function ($value) use ($callback) {

                return is_numeric($value) || $callback($value);

            };

        }

        if ($valueTypes & Specifications::TYPE_STRING) {

            $callback = function ($value) use ($callback) {

                return is_string($value) || $callback($value);

                return is_numeric($value) || $callback($value);

            };

        }

        if ($valueTypes & Specifications::TYPE_STRING) {

            $callback = function ($value) use ($callback) {

                return is_string($value) || $callback($value);

            };

        }

        if ($valueTypes & Specifications::TYPE_BOOLEAN) {

            $callback = function ($value) use ($callback) {

                return is_bool($value) || $callback($value);

                return is_string($value) || $callback($value);

            };

        }

        if ($valueTypes & Specifications::TYPE_BOOLEAN) {

            $callback = function ($value) use ($callback) {

                return is_bool($value) || $callback($value);

            };

        }

        return $callback;

    }