如何将 PHP 表单数据保存到会话变量而不更新 Dreamweaver 中的数据库？

Question

我正在使用 Dreamweaver 构建我的 PHP/MySQL 站点，因为我的技能相当低，我想将多选项下拉列表中的选择保存到 $_SESSION 变量中。在使用上一页上的以下内容更新数据库中的字段时，我已成功保存到会话变量，并且似乎正在工作（Dreamweaver 插入的页面顶部，我评论了我编辑它以使其存储到$_SESSION):

<?php
if (!function_exists("GetSQLValueString")) {
  function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
  {
    if (PHP_VERSION < 6) {
      $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
    }

    $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

    switch ($theType) {
      case "text":
        $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
        break;    
      case "long":
      case "int":
        $theValue = ($theValue != "") ? intval($theValue) : "NULL";
        break;
      case "double":
        $theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
        break;
      case "date":
        $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
        break;
      case "defined":
        $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
        break;
    }
    return $theValue;
  }
}

$editFormAction = $_SERVER['PHP_SELF'];
if (isset($_SERVER['QUERY_STRING'])) {
  $editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);
}
/// this is what to edit to make session variables from a form
if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "SelectBookForm")) {
  $insertSQL = sprintf("INSERT INTO characters (character_name1, play_system, character_owner) VALUES (%s, %s, %s)",
                       GetSQLValueString($_POST['NewCharacterNameInput'], "text"),
                       GetSQLValueString($_POST['select'], "text"),
                       GetSQLValueString($_POST['CharacterOwner'], "int"));
                       $_SESSION['play_system'] = GetSQLValueString($_POST['select'], "text");
                       $_SESSION['character_owner'] = GetSQLValueString($_POST['CharacterOwner'], "int");
                       $_SESSION['character_name1'] = GetSQLValueString($_POST['NewCharacterNameInput'], "text");

  mysql_select_db($database_DLP_RPG, $DLP_RPG);
  $Result1 = mysql_query($insertSQL, $DLP_RPG) or die(mysql_error());

  $insertGoTo = "character_new_book_select.php";
  if (isset($_SERVER['QUERY_STRING'])) {
    $insertGoTo .= (strpos($insertGoTo, '?')) ? "&" : "?";
    $insertGoTo .= $_SERVER['QUERY_STRING'];
  }
  header(sprintf("Location: %s", $insertGoTo));
}

mysql_select_db($database_DLP_RPG, $DLP_RPG);
$query_login = "SELECT * FROM users";
$login = mysql_query($query_login, $DLP_RPG) or die(mysql_error());
$row_login = mysql_fetch_assoc($login);
$totalRows_login = mysql_num_rows($login);

mysql_select_db($database_DLP_RPG, $DLP_RPG);
$query_play_systems_recordset = "SELECT * FROM play_systems";
$play_systems_recordset = mysql_query($query_play_systems_recordset, $DLP_RPG) or die(mysql_error());
$row_play_systems_recordset = mysql_fetch_assoc($play_systems_recordset);
$totalRows_play_systems_recordset = mysql_num_rows($play_systems_recordset);

mysql_select_db($database_DLP_RPG, $DLP_RPG);
$query_CharacterOwner = "SELECT * FROM users WHERE users.user_id = 
    (SELECT user_id FROM users WHERE user_login = '{$_SESSION['MM_Username']}')";
$CharacterOwner = mysql_query($query_CharacterOwner, $DLP_RPG) or die(mysql_error());
$row_CharacterOwner = mysql_fetch_assoc($CharacterOwner);
$totalRows_CharacterOwner = mysql_num_rows($CharacterOwner);
?>

这就是 Dreamweaver 用来在页面正文中制作表单的方法（同样，这是有效的）：

<form action="<?php echo $editFormAction; ?>" name="SelectBookForm" method="POST" id="SelectBookForm"> 
  <select name="select" size="1" form="SelectBookForm">
    <?php
do {  
?>
    <option value="<?php echo $row_play_systems_recordset['play_system']?>"><?php echo $row_play_systems_recordset['play_system']?></option>
    <?php
} while ($row_play_systems_recordset = mysql_fetch_assoc($play_systems_recordset));
  $rows = mysql_num_rows($play_systems_recordset);
  if($rows > 0) {
      mysql_data_seek($play_systems_recordset, 0);
      $row_play_systems_recordset = mysql_fetch_assoc($play_systems_recordset);
  }
?>
  </select>
  <input name="CharacterOwner" type="hidden" id="CharacterOwner" value="<?php echo $row_CharacterOwner['user_id']; ?>"><input name="NewCharacterNameInput" type="text" required id="NewCharacterNameInput" form="SelectBookForm" placeholder="Give your character a name!" size="25" maxlength="128">
      <BR>
  <input name="NewCharacterSubmit" type="submit" id="NewCharacterSubmit" form="SelectBookForm" value="Select system and start my character">

      <input type="hidden" name="MM_insert" value="PlaySystemForm">
      <input type="hidden" name="MM_insert" value="SelectBookForm">
</form>

似乎没有选项只保存到$_SESSION，而不是输入或更新到 Dreamweaver 中的数据库。每次我尝试创建记录集时，我都会在第 114 行遇到错误，这只是两个 } 括号之间的空格。

这是我要创建的页面形式：

<form method="post" id="BookSelectionForm">
<select name="BookSelections" size="10" multiple id="BookSelections" form="BookSelectionForm">
  <?php
do {  
?>
  <option value="<?php echo $row_BooksRecordset['book']?>"><?php echo $row_BooksRecordset['book']?></option>
  <?php
} while ($row_BooksRecordset = mysql_fetch_assoc($BooksRecordset));
  $rows = mysql_num_rows($BooksRecordset);
  if($rows > 0) {
      mysql_data_seek($BooksRecordset, 0);
      $row_BooksRecordset = mysql_fetch_assoc($BooksRecordset);
  }
?>
</select>

<input name="BookSelectionFormSubmitButton" type="submit" id="BookSelectionFormSubmitButton" form="BookSelectionForm" formmethod="POST" value="Select these campaigns">
</form>

根据本文顶部示例中的输入，它可以正常工作并严格限制数据应有的方式。长话短说，我想将多选项下拉列表中的选择存储为$_SESSION['book'] 变量，以便我可以在下一页使用它。有人可以帮助我走上正确的道路来实现这一目标吗？

不确定它有多少价值，但这里也是 Dreamweaver 允许无错误的记录集信息的顶部。

<?php
if (!function_exists("GetSQLValueString")) {
  function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
  {
    if (PHP_VERSION < 6) {
      $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
    }

    $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

    switch ($theType) {
      case "text":
        $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
        break;    
      case "long":
      case "int":
        $theValue = ($theValue != "") ? intval($theValue) : "NULL";
        break;
      case "double":
        $theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
        break;
      case "date":
        $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
        break;
      case "defined":
        $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
        break;
    }
    return $theValue;
  }


}

mysql_select_db($database_DLP_RPG, $DLP_RPG);
$query_login = "SELECT * FROM users";
$login = mysql_query($query_login, $DLP_RPG) or die(mysql_error());
$row_login = mysql_fetch_assoc($login);
$totalRows_login = mysql_num_rows($login);

/// this one sets the play_system to the one selected at the beginning and can be used to restrict results by using the variable $BooksRecordset, I probably need to change this because it's confusing.  It's giving the play_system and not the books.  Maybe RealBooksRecordset is better for now.
mysql_select_db($database_DLP_RPG, $DLP_RPG);
$query_BooksRecordset = "SELECT * FROM character_system WHERE character_system.system_name = ({$_SESSION['play_system']})";
$BooksRecordset = mysql_query($query_BooksRecordset, $DLP_RPG) or die(mysql_error());
$row_BooksRecordset = mysql_fetch_assoc($BooksRecordset);
$totalRows_BooksRecordset = mysql_num_rows($BooksRecordset);



?>

编辑：我知道为什么我在第 114 行得到错误，因为它是一个错误的括号，但仍然无法让它添加记录集。

Answer 1

（我第一次看到这篇文章时，我以为这是个玩笑。然后我浏览了你的一些答案，我觉得你是 SO coderot 的受害者，你不能怪。用谷歌的方式来垃圾 PHP 太容易了。）

长话短说，我想将多选项下拉列表中的选择存储为 $_SESSION['book'] 变量，以便在下一页使用它。 有人可以帮助我走上正确的道路来实现这一目标吗？

当然。所以，首先：告诉一群程序员你使用 Dreamweaver 编写 PHP 是因为你缺乏技能，就像告诉一群猎人你正在用弹弓追捕一只熊，因为你不知道如何射枪：期待很多关于射枪或打兔子的建议，但不要期待弹弓有太多帮助。

tl;dr：Dreamweaver 无法帮助您。这是您为获得答案而苦苦挣扎的部分原因。

• 您正在寻找serializing
• Please stop using that mysql library

• ...还有这个？

  if (PHP_VERSION < 6) { 
      $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
  }
  

ಠ_ಠ

仅供参考，这是您无法让它添加记录集的最大原因，因为这种方法在十多年来一直不合理。至少use something actually supported。

希望这能让您指明正确的方向。如果您需要更多帮助，我会在附近。