Untitled

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Document</title>
  </head>
  <body>
    <form class="" action="index3.php" method="post">
      <label for="mot">Entrez le mot a traduire :</label>
      <input type="text" name="mot">
      <input type="submit" value="Valider">
      <select class="" name="direction">
        <option value="toEnglish">Francais -> Anglais</option>
        <option value="toFrench">Anglais -> Francais</option>
      </select>

      <?php
      $traductions = array(
        "chat" => "cat",
        "chien" => "dog",
        "maison" => "home",
        "voiture" => "car"
      );

      $copieTrad = $traductions;

      if (isset($_POST["direction"])) {
        $selectOption = $_POST["direction"];
        if ($selectOption == 'toFrench') {
          $copieTrad = array_flip($copieTrad);
        } else {
          $copieTrad = $traductions;
        }
      }

      if (isset($_POST["mot"])) {
        $traduire = strtolower($_POST["mot"]);
        if (array_key_exists($traduire, $copieTrad)) {
          echo "Le mot"." ".$traduire." "."se traduit par"." ".$copieTrad[$traduire];
        } else {
          echo "Je ne connais pas ce mot, désolé...";
        }
      } else {
        echo " ";
      }

      ?>
    </form>
  </body>
</html>