Question

我需要先验证错误，然后才能转到表单的操作网址。当我点击提交时，即使有错误，也会转到/test/policy.php。我希望它只有在我的表单中没有错误时才会去那里。到目前为止，这是我的代码：

// Create an empty array to hold the error messages.
$arrErrors = array();
//Only validate if the Submit button was clicked.
if (!empty($_POST['submit']))
 {

      // Each time theres an error, add an error message to the error array
      // using the field name as the key.
      if (empty($_POST['first_name']))
          $arrErrors['first_name'] = '<br><font color="red">Please provide your first name.</font>';
      if (empty($_POST['last_name']))
          $arrErrors['last_name'] = '<br><font color="red">Please provide your last name.</font>';
      if (empty($_POST['business_name']))
          $arrErrors['business_name'] = '<br><font color="red">Please provide your business name.</font>';
 }


      // If the error array is empty, there were no errors.
      // Insert form processing here.

      if (count($arrErrors) == 0)
      {


        $first_name=cleaninput($_POST['first_name']);
        $last_name=cleaninput($_POST['last_name']);
        $business_name=cleaninput($_POST['business_name']);
        //Insert the details into database

      }
      else
      {

        // The error array had something in it. There was an error.
        // Start adding error text to an error string.
        $failure_message= "There was an error in the form";

        $strError="";
        foreach ($arrErrors as $error)
        {
           $strError .= $error;
        }

      }
    }
 ?>



<tr>
   <td>
   <? if(!empty($success_message))
      {
        echo "<center><font color='blue'><b>".$success_message."</b></font><br>";
      }
      if(!empty($failure_message))
      {
         echo "<center><font color='red'><b>".$failure_message."</b></font><br>";
      }
   ?>

<?
if((empty($_POST)) || !empty($strError))
{
     echo "<table align= 'center' width='70%' style='border-top: 1px; border-right: 1px; border-left: 1px; border-bottom: 1px; border-color: black; border-style: solid;'>";
?>
<tr>
  <td>

   <form action="/test/policy.php" method="post">
      <tr height='40'>
         <td>
           <font color="black"><B> First Name: </B></font>
         </td>
     <td><input type="text" size ="40" name="first_name" value="<? if(!empty($strError)) {echo cleaninput($_POST['first_name']);}?>" class="advertising-inputbox-style" />
            <?php if (!empty($arrErrors['first_name'])) echo $arrErrors['first_name']; ?>
     </td>

      </tr>
      <tr height='40'>
         <td><font color="black"><B> Last Name: </B></font></td>
         <td><input type="text" size ="40" name="last_name" value="<? if(!empty($strError)) { echo cleaninput($_POST['last_name']);}?>" class="advertising-inputbox-style"/>
         <?php if (!empty($arrErrors['last_name'])) echo $arrErrors['last_name']; ?>
             </td>
      </tr>

      <tr height='40'>
         <td><font color="black"><B> Email Address: </B></font></td>
         <td><input type="text" size ="40" name="email_address" value="<? if(!empty($strError)) { echo cleaninput($_POST['email_address']);}?>" class="advertising-inputbox-style"/>
         <?php if (!empty($arrErrors['email_address'])) echo $arrErrors['email_address']; ?>
             </td>
      </tr>
       <tr height='35'>
         <td><font color="black"><B> Business Name: </B></font></td>
         <td><input type="text" size ="40" name="business_name" value="<? if(!empty($strError)) { echo cleaninput($_POST['business_name']);}?>" class="advertising-inputbox-style" />
          <?php if (!empty($arrErrors['business_name'])) echo $arrErrors['business_name']; ?>
             </td>
      </tr>

      <tr height='35'>
         <td></td>
         <td><input type="submit" name="submit" value="submit" /></td>
      </tr>

   </form>

  <?}?>
  </td>
   </tr>

</table>

Answer 1

您可以将操作留空，然后在验证后，您可以使用header重定向到/test/policy.php。

if (count($arrErrors) == 0) {  
    header('Location: /test/policy.php');  
}

Answer 2

如果上面的代码在一个文件中，那么只有在没有错误的情况下才必须重定向用户。所以，假设这个文件叫做index.php，然后表单会有action =“index.php”并在提交后自行转到：

<form action="/test/index.php" method="post">

但是在将用户表单数据插入数据库之后，您将用户重定向到/test/policy.php，如下所示：

//Insert the details into database
your database insert code
....
header('Location: /test/policy.php');
die();

Answer 3

不，您在重定向后无法使用POST，但如果您需要first_name，则已在数据库中使用它。所以在重定向时在GET中发送用户ID，如下所示：

//Insert the details into database
your database insert code
$user_id = mysql_insert_id();
....

header('Location: /test/policy.php?user_id='.$user_id);
die();

在policy.php中

从数据库中选择用户字段first_name

在转到操作页面之前验证表单错误

3 个答案: