Day 2 finished

2023/d2/d2_2.php

@@ -0,0 +1,30 @@
+<?php
+
+$FILE_NAME = "input.txt";
+$sum = 0;
+
+$fd = fopen($FILE_NAME, "r");
+while($line = fgets($fd)){
+	$data = array();
+	preg_match("/Game (\d+): (.*)/", $line, $data);
+
+	$game_id = $data[1];
+	$hand = explode(";", $data[2]);
+
+	$bag = array(
+		"red" => 0,
+		"green" => 0,
+		"blue" => 0,
+	);
+	foreach ($hand as $h) {
+		$colors = array();
+		preg_match_all("/(\d+) (red|green|blue)/", $h, $colors);
+		foreach (array_combine($colors[2], $colors[1]) as $key => $value) {
+			$bag[$key] = max($bag[$key], $value);
+		}
+	}
+	print_r($bag);
+	$sum += $bag['red'] * $bag['green'] * $bag['blue'];
+}
+fclose($fd);
+echo $sum;