请帮帮我。这是php代码，第一个代码创建表，第二个代码将数据插入数据库，但它无法访问变量。

<?php
   $con= mysqli_connect              ('localhost','root','adminadmin','votes');
    $save;
    if(isset($_POST['save'])){
   $save=$_POST['cate'];

   $tl="CREATE TABLE $save (id INT NOT NULL PRIMARY     KEY auto_increment,
     name varchar (60) NOT NULL,
    category varchar (60) NOT NULL)";

    mysqli_query($con, $tl);
    }else{
      if (isset($_POST['submit'])){
        $name=$_POST['name'];
        $cate=$_POST['categ'];

        $sql= "INSERT INTO $save (name, category) VALUES     ('$name','$cate')";

        mysqli_query($con, $sql);
   }
   }
   ?>

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

    <label>Enter category</label>
   <input type="text" name="cate" ></input>
   <button type="submit" name="save">save</button>
   </form>

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

   <label>Enter name</label>
    <input type="text" name="name" ></input>
    <label>Enter category</label>
   <input type="text" name="categ" ></input>

    <button type="submit" name="submit">save</button>
    </form>

提前谢谢