Advent of Code 2023 - Day 1

day1.php

<?php
//Tinker away!

use Illuminate\Support\Arr;
use Illuminate\Support\Str;

$input = "two1nine
eightwothree
abcone2threexyz
xtwone3four
4nineeightseven2
zoneight234
7pqrstsixteen";

Str::of($input)
    ->explode("\n")
    ->map(function (string $line): int {
        preg_match_all('/(?=(one|two|three|four|five|six|seven|eight|nine|\d))/', $line, $matches);

        $numbers = Arr::map($matches[1], static fn ($value): int => match ($value) {
            '1', 'one' => 1,
            '2', 'two' => 2,
            '3', 'three' => 3,
            '4', 'four' => 4,
            '5', 'five' => 5,
            '6', 'six' => 6,
            '7', 'seven' => 7,
            '8', 'eight' => 8,
            '9', 'nine' => 9,
        });

        return Arr::first($numbers) . Arr::last($numbers);
    })
    ->sum();