I've completed "Playground" - Day 8 - Advent of Code 2025 #AdventOfCode https://adventofcode.com/2025/day/8

Done in #php

Today, I missed something in the puzzle instruction, and I can figure out why my code does not work.

So after navigating on some diverse resolution, I found mention of dedicated algorythm for this kind of thing.

But meh.
I'm stilling unsatisfied to not understand why. Maybe due to the english (not my native language) 😕

Code here: https://github.com/velkuns/adventofcode-2025/blob/main/src/Day/PuzzleDay8.php

I've completed "Laboratories" - Day 7 - Advent of Code 2025 #AdventOfCode https://adventofcode.com/2025/day/7

Done in #PHP

Very happy, solution run in ~25ms (by part, but same algo).
Not so difficult, just need to find a good optimized solution for part 2.

I use my matrix helper class again to ease the readability.

Code here: https://github.com/velkuns/adventofcode-2025/blob/main/src/Day/PuzzleDay7.php

@mina I find PHP very readable, but we can also write terribly unreadable things.

But I always try to make it readable over full optimized. Because gaining 1 or 2ms is less important than being understandable by the majority of people.

I've completed "Trash Compactor" - Day 6 - Advent of Code 2025 #AdventOfCode https://adventofcode.com/2025/day/6

Done in PHP, as every year :)
Code available here, https://github.com/velkuns/adventofcode-2025/blob/main/src/Day/PuzzleDay6.php

Other days also available, I didn't post yet.
I don't optimize the day 4 now (but know how to do that, it is pretty simple).

But other part are quite optimised, globally around the milliseconds.

Pretty nice for #php code :)