（php）在初始表單之後獲得額外的輸入？

我繼續寫一個迷宮生成器來教自己的PHP ...（php）在初始表單之後獲得額外的輸入？

我已經設置了一個會話，並且收集一個名稱和一個迷宮大小（5-20）的表單。

在第一次運行時，工作正常，迷宮生成。

我想進一步的會議是名字被記住，但大小是重新輸入。

我試過使用另一種（不同）的形式，如果會話不是新的，但它不承認/運行它和錯誤，告訴我$ mazesize是一個無法識別的索引。

代碼：

<?php 
session_start(); 
error_reporting(-1); 
?> 
<html> 
<head> 
</head> 
<body> 
<?php 

include 'ClassFunc1.php'; 

//program functionality 
if (!isset($_SESSION['name']) && !isset($_POST['name'])){ 
    //if no data, print form 
     ?><table><tr> 
     <form action="<?php echo $_SERVER['PHP_SELF'] ?>" method="post"> 
     <td>Name: </td><td><input type="text" name="name"></td></tr> 
     <tr><td>Maze size (min 5 max 20): </td><td><input type="text" name="mazesize"></td></tr> 
     <tr><td colspan="2" align="center"><input type="submit" name="submit" value="Submit"></td></tr> 
     </form></table> 
     <?php 
}else if (!isset($_SESSION['name']) && isset($_POST['name']) && isset($_POST['mazesize'])){ 
     //if a session doesn't exist but the form has been submitted 
     //check to see if the form has all required values 
     //create a new session 
     if(!empty($_POST['name'])){ 
     $_SESSION['name']=$_POST['name']; 
     $_SESSION['start']=time(); 
     echo "Welcome, ".$_POST['name'].". A new session has been activated for you. Click <a href=".$_SERVER['PHP_SELF'].">here</a> to refresh the page."; 
     if($_POST['mazesize']>20){ 
      $m_size=20; 
     }elseif($_POST['mazesize']<5){ 
      $m_size=5; 
     }else{ 
      $m_size=$_POST['mazesize']; 
     } 
     define("COL_MAX",$m_size); 
     define("ROW_MAX",$m_size); 
     run_maze($_POST['name']); 
     close_down(); 
     }else{ 
      echo "ERROR. Please enter your name and a maze size"; 
     } 
}else if (isset($_SESSION['name'])) { 
     //if a previous session exists 
     //calculate elapsed time since session start and now 
     echo "Welcome back, ".$_SESSION['name'].". This session was activated ".round((time()-$_SESSION['start'])/60)." minute(s) ago. Click <a href=".$_SERVER['PHP_SELF'].">here</a> to refresh the page.<br />"; 
     echo "Current session ID: ".session_id(); 
    //Ask for a new maze size 
     ?><table><tr> 
     <form action="<?php echo $_SERVER['PHP_SELF'] ?>" method="post"> 
     <td>Maze size (min 5 max 20): </td><td><input type="text" name="mazesize"></td></tr> 
     <tr><td colspan="2" align="center"><input type="submit" name="submit" value="Submit"></td></tr> 
     </form></table> 
     <?php 
     if($_POST['mazesize']>20){ 
      $m_size=20; 
     }elseif($_POST['mazesize']<5){ 
      $m_size=5; 
     }else{ 
      $m_size=$_POST['mazesize']; 
     } 
    define("COL_MAX",$m_size); 
    define("ROW_MAX",$m_size); 
    run_maze($_POST['name']); 
    close_down(); 
} 

//session_destroy(); 


?>

「包括」文件是類，方法&功能。

我確定我做錯了什麼，任何人都可以幫忙嗎？

非常感謝

ETA：

（代碼回聲「錯誤修正後...行）

}else if (isset($_SESSION['name']) && !isset($_POST['n_mazesize'])) { 
      //if a previous session exists but n_mazesize not set 
      //calculate elapsed time since session start and now 
      echo "Welcome back, ".$_SESSION['name'].". This session was activated ".round((time()-$_SESSION['start'])/60)." minute(s) ago. Click <a href=".$_SERVER['PHP_SELF'].">here</a> to refresh the page.<br />"; 
      echo "Current session ID: ".session_id(); 
     //Ask for a new maze size 
      ?><table><tr> 
      <form action="<?php echo $_SERVER['PHP_SELF'] ?>" method="post"> 
      <td>Maze size (min 5 max 20): </td><td><input type="text" name="n_mazesize"></td></tr> 
      <tr><td colspan="2" align="center"><input type="submit" name="submit" value="Submit"></td></tr> 
      </form></table> 
      <?php 
    }else if (!isset($_SESSION['name']) && isset($_POST['n_mazesize'])){ 
      //if a previous session exists and n_mazesize is set 
      //calculate elapsed time since session start and now 
      echo "Welcome back, ".$_SESSION['name'].". This session was activated ".round((time()-$_SESSION['start'])/60)." minute(s) ago. Click <a href=".$_SERVER['PHP_SELF'].">here</a> to refresh the page.<br />"; 
      echo "Current session ID: ".session_id(); 
      if(!empty($_POST['n_mazesize'])){ 
      if($_POST['n_mazesize']>20){ 
       $m_size=20; 
      }elseif($_POST['n_mazesize']<5){ 
       $m_size=5; 
      }else{ 
       $m_size=$_POST['n_mazesize']; 
      } 
     run_maze($_SESSION['name'], $m_size); 
     close_down(); 
     } 

    //session_destroy(); 
    } 

    ?> 
</body> 
</html>

這要求進行規模但提交返回一個空白屏幕： - （

來源

2012-05-14 horsethorn

你在調用'session_start（）'的地方嗎？ –

是的，這只是代碼的摘錄;如果沒有設置會話名稱，會出現一個表單詢問名稱和大小，如果會話名稱已設置，則會嘗試詢問新的大小。此代碼之前的行是：'} else if（isset（$ _ SESSION ['name']））{' – horsethorn

我會將整個代碼添加到我的問題中... – horsethorn

$ _POST ['mazesize']的值只有在表單提交時纔可用，您應該添加一個條件：

if ($_SERVER['REQUEST_METHOD'] == 'POST') { 
    // use posted data here 
}

來源

2012-05-14 15:22:54

所以我應該添加一個嵌套版本的初始if（isset ... for this form too？ – horsethorn

@horsethorn是啊，它似乎是這樣:) –

我需要給兩個表單/提交單獨的名稱嗎？ – horsethorn

（php）在初始表單之後獲得額外的輸入？

回答

相關問題