app VS phpmicro

For the CLI tool itself, you'd be looking at: https://github.com/apexpl/app/

You're right, in the "develop Your First Package" guide I use the get method, which is only available via Guzzle and it's not PSR-18 compliant. I did that for the sake of brevity, because I figured anyone viewing that guide will be using the default install which comes with Guzzle. If you look through the App package though (https://github.com/apexpl/app/) you'll see it only ever uses the PSr-18 compliant sendRequest method. Although Apex does come with Guzzle by default, developers are more than welcome to modify the ~/boot/container.php file and change that one entry out to any PSR-18 compliant implementation they would like such as Httpful or whatever, and I promise Apex will continue humming along just fine.

Please note, I didn't just pull SVN out of my ass, and a whole lot of planning and research went into this. Take a look at the code at https://github.com/apexpl/app/ and you'll see for yourself this is solid code. Are you by chance a PHP developer? If so, feel free to give this a test spin via Docker. The design is horrendous at the moment, but the network is online and solid -- https://apexpl.io/guides/develop_your_first_package

TL;DR: you build your app as a phar (for example with Box), en then prepend it with this: https://github.com/dixyes/phpmicro/blob/master/Readme.EN.md

The code is in English though, and if your concern is about security that's what you should be auditing anyway, not the readme : https://github.com/dixyes/phpmicro/blob/master/php_micro.c

I looked at PHP micro that seems to make this happen but it's a WIP AFAIK and I haven't heard anything for a long time now. I hope they're still working on it.