Taeluf.com

golf1-clean

#!/usr/bin/env php
<?php

$lines=file('input.txt');

// first letter of each color name, so we can use $$color
$r=12;
$g=13;
$b=14;

$total = 0;

foreach ($lines as $line){
    preg_match_all('/(\d+) (.)/',$line, $cube_counts);

    foreach($cube_counts[2] as $index=>$color){
        if($cube_counts[1][$index]>$$color)continue 2;
    }

    preg_match('/\d+/',$line,$matches);
    $total+=$matches[0];
}

// should be 2563
echo "Sum of Game IDs: $total\n";