✨ Finit le jour 6

day_6/part_1.php

@@ -0,0 +1,19 @@
+<?php
+
+$timers = explode(',', file_get_contents('./input.txt'));
+
+echo sprintf('Initial state: %s', implode(',', $timers));
+
+for ($i = 0; $i < 80; $i++) {
+    for($t = 0, $l = count($timers); $t < $l; $t++) {
+        if ($timers[$t] > 0) {
+            $timers[$t]--;
+        } else {
+            $timers[$t] = 6;
+            $timers[] = 8;
+        }
+    }
+    echo sprintf('After %u day(s): %s%s', $i + 1, implode(',',$timers), "\n");
+}
+
+echo count($timers);