如何在数据库中存储会话变量

时间:2015-03-05 11:04:36

标签: php database variables session

我实际上是PHP新手。我的问题是会话不存储在我的数据库中。

这是我的demo_session1.php

<?php
$Refno="";
// Start the session
session_start();

$_SESSION["$Refno"] = "HNo1";
echo "Ref no.:HNO1";

if(isset($_POST['submit']))
{
   $Refno  = $_POST['Refno'];

}
?>

<html>
<body>
<a href="demo_session2.php">Arrange to view property</a>

</body>
</html> 

这是我的demo_session2.php:

<?php
$Refno = $message= ""; 
$messageErr = "";

session_start();
require "configdemo.php";
echo "Ref no.: " . $_SESSION["$Refno"] . ".<br>";

if(isset($_POST['submit']))
{
$Refno  = $_POST['Refno'];
$message = $_POST['message'];
}

 if (empty($_POST["message"])) 
{
     $messageErr = "Please leave a message for the agent.";
   }

else
{

 $sql = mysqli_query($con,"INSERT INTO demo (Refno, message) VALUES 

('$Refno' , '$message') ") or die("Can't Insert! ");
          header ("location: thanks.php"); 
         }

?>
<style>
.error {
color: #FF0000;
font-size:12px;
text-transform: lowercase;
}
</style>
<!DOCTYPE html>
<html>
<body>
<table width="100%" align="center" cellpadding="0" cellspacing="1" >
<form name="viewing_form" method="post" action="">
<tr>
<td>Message: <td><textarea name="message"rows="5" cols="25" value="<?php echo 

$message;?>"></textarea>
<td><span class="error"> <?php echo $messageErr;?></span></td>
</tr>
<tr>
<td><input type="submit" name="submit" value="Submit"></td>
<td><input type="submit" name="cancel" value="Cancel"></td>
</body>
</html> 

“Refno”显示在demo_session2.php上,但是当我按下提交按钮时,只会将消息插入到数据库中。我也希望插入“Refno”。

1 个答案:

答案 0 :(得分:2)

  • 从$ _SESSION Refno中删除$ Sign(如文森提到的那样)
  • 如果我看到的正确,您的表单不包含名称为&#34; Refno&#34;的字段。所以没有$ _POST [&#39; Refno&#39;]。因此,要么添加这样的字段,要么在QUERY中使用SESSION:

      

    $ sql = mysqli_query($ con,&#34; INSERT INTO demo(Refno,message)VALUES   (&#39; $ _ SESSION [Refno]&#39;,&#39; $ message&#39;)&#34;)或死亡(&#34;无法插入!&#34;);

正如卡雷尔所说,用mysqli_real_escape_string()

来逃避$消息是合适的