use constants for rock paper scissors

R3.01/tp/tp3/chifoumi/index.php

@@ -1,9 +1,13 @@
 <?php
+$ROCK = 0;
+$PAPER = 1;
+$SCISSORS = 2;
+
 $images = ["rock.png", "paper.png", "scissors.png"];
 $rules = [
-    0 => [0 => "Draw", 1 => "Loss", 2 => "Win"],
-    1 => [0 => "Win", 1 => "Draw", 2 => "Loss"],
-    2 => [0 => "Loss", 1 => "Win", 2 => "Draw"],
+    $ROCK => [$ROCK => "Draw", $PAPER => "Loss", $SCISSORS => "Win"],
+    $PAPER => [$ROCK => "Win", $PAPER => "Draw", $SCISSORS => "Loss"],
+    $SCISSORS => [$ROCK => "Loss", $PAPER => "Win", $SCISSORS => "Draw"],
 ];
 
 $playerChoice = filter_input(