Re: [RFC] Autoloader Classmap
> On 6 Apr 2021, at 05:05, Mark Randall <marandall@php.net> wrote:
>
> On 15/03/2021 17:41, Mark Randall wrote:
>> I would like to propose the addition of a new mechanism of autoloading classes - a classmap
>> that will be consulted prior to checking the spl_autoload_register'd callbacks.
>> https://wiki.php.net/rfc/autoload_classmap
>
> Does anyone else have any more feedback on this? If not I plan on opening voting in a couple of
> weeks or so.
>
> The tl;dr:
>
> * Autoloading is one of the routines called most frequently in any request.
>
> * It's a very minor boost in autoloading performance, around 5% vs invoking a userland
> function. This will easily be swamped by any IO and invalidated entirely by preloading.
>
> * I expect 99.9999% of users will never know it exists, and it will instead just be an option
> for tools like composer that will provide a small transparent boost.
>
> * It provides a very minor benefit to debugging as you get to skip over the autoloading frames
> which so very often come up during a request.
>
>
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Hi Mark,
Just to clarify something - wouldn't the loader use ‘require’ behaviour, not
‘require_once’ behaviour? If you’re hitting the autoloader, that means the class in the file
you’re about to load isn’t defined yet, which means the file hasn’t been loaded already. Using
require_once you’d be doing a check if the file has loaded in a scenario where it would have never
been loaded anyway.
Cheers
Stephen
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