✨ Finit le jour 2 et commence le 1 et le 3

day_3/part_1.php

@@ -0,0 +1,18 @@
+<?php
+
+$banks = explode("\n", file_get_contents('./input.txt'));
+
+$output_joltage = [];
+
+foreach ($banks as $bank) {
+    $a_bank = str_split($bank);
+
+    $max = max(array_slice($a_bank,0,count($a_bank)-1));
+    $i = array_search($max, $a_bank);
+    $right_part = array_slice($a_bank, $i+1);
+    $max2 = max($right_part);
+
+    $output_joltage[] = (int) $max.$max2;
+}
+
+echo array_sum($output_joltage);