les commentaires étaient utiles

index.php

@@ -7,10 +7,11 @@
     <link rel="stylesheet" href="styles.css">
 </head>
 <?php
-//exec('gpio mode 7 out')
-//exec('gpio mode 0 out')
-//exec('gpio mode 2 out')
-//exec('gpio mode 3 out')
+exec('gpio mode 7 out');
+exec('gpio mode 0 out');
+exec('gpio mode 2 out');
+exec('gpio mode 3 out');
+
 if ($_SERVER["REQUEST_METHOD"] == "POST") {
     if (isset($_POST['lumiere'])) {
         $lumiere = $_POST['lumiere'];