Way to re-implement internal functions

[xepozz]

In discussion at https://habr.com/ru/articles/797343/#comment_26565719 was an idea to implement internal functions as they are through php -r "echo $function_name();", instead of using Bash.

[xepozz]

An interesting approach to redefine a function.
https://php-tips.readthedocs.io/en/latest/tips/redefine_native_functions.html

It didn't work in REPL

But worked in https://3v4l.org/VmMTI

Just some thought

[xepozz]

https://3v4l.org/5OeH1

<?php
use function time as backup_time;

function my_time() { return 123; }

use function my_time as time;

echo time();
echo "\n";
echo backup_time();