单击提交时如何获取消息？

Question

我是php的新手，我想当我单击“提交”按钮以查看第action.php页消息时。

index.php

<form method="POST" action="action.php">

             <div class="form-group">
              <label>nom</label>
              <input type="text" name="nom" class="form-control">
             </div>
             <div class="form-group">
              <label>description</label>
              <input type="text" name="description" class="form-control">
             </div>
             <div class="form-group">
              <label>body</label>
              <textarea type="text" name="body" class="form-control"></textarea>
             </div>
             <div class="form-group">
              <input  class="btn btn-warning form-control" name="submit" value="submit">
             </div>

            </form>

action.php

<?php

if(isset($_POST["submit"])){
    echo "btn submit click";
}

?>

Answer 1

输入需要type="submit"。

<input type="submit" class="btn btn-warning form-control" name="submit" value="submit">

Answer 2

您的输入应为

<input class="btn btn-warning form-control" type="submit">

代替

<input  class="btn btn-warning form-control" name="submit" value="submit">