php spl_autoload_register vs __autoload?

Question

hello is there any diffrence useing this excepts that we can use our own name auto load? is there any performance difference? how do they internally work?

between

Answer 1

Documentation for "Autoloading Classes" reads:

spl_autoload_register() provides a more flexible alternative for autoloading classes. For this reason, using __autoload() is discouraged and may be deprecated or removed in the future.

Documentation for spl_autoload_register() reads:

If there must be multiple autoload functions, spl_autoload_register() allows for this. It effectively creates a queue of autoload functions, and runs through each of them in the order they are defined. By contrast, __autoload() may only be defined once.