Message: Return type of CI_Session_files_driver::open($save_path, $name) should either be compatible with SessionHandlerInterface::open(string $path, string $name): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Message: Return type of CI_Session_files_driver::close() should either be compatible with SessionHandlerInterface::close(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Message: Return type of CI_Session_files_driver::read($session_id) should either be compatible with SessionHandlerInterface::read(string $id): string|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Message: Return type of CI_Session_files_driver::write($session_id, $session_data) should either be compatible with SessionHandlerInterface::write(string $id, string $data): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Message: Return type of CI_Session_files_driver::destroy($session_id) should either be compatible with SessionHandlerInterface::destroy(string $id): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Message: Return type of CI_Session_files_driver::gc($maxlifetime) should either be compatible with SessionHandlerInterface::gc(int $max_lifetime): int|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Matter is anything that has mass and takes up space.All matter is made up of small particles called atoms. It is the smallest part of a matter
States of Matter
Solid
The particles (ions, atoms or molecules) are tightly packed
Strong force of attraction between the particles.So they can not move freely but can only vibrate. As a result, the solid has a definite shape and volume.
Slightly compressible
Liquid
Particles are closely packed but able to flow.
Intermolecular forces are weaker than solids but stronger than that of gases.
There is much space in between the molecules of liquids so they flow and take the shape of the container.
Slightly Compressible
Gas
The intermolecular forces experienced between them are negligible.
