Question

我创建了一个php注册页面。一切都运行良好。当我将文本框留空时显示错误。

然而，当我使用action方法重定向注册页面时，它总是重定向，无论是在我写东西时还是在我没有在文本框中输入内容时。

我希望当字段为空时页面不会重定向。我使用布尔值和break方法，但没有发生任何事情。

在这个问题上有人可以帮我吗？

<html>  
 <?php
 include 'header.php';

 $nameErr = $emailErr = $genderErr = $passwordErr = $addErr = $phoneErr = "";

 $fullname = $email = $gender = $password = $address = $phone = "";
$flag = false;
if ($_SERVER["REQUEST_METHOD"] == "POST") {

   if (empty($_POST["fullname"])) {
     $nameErr = "Name is required";
     break;
   $flag      
   } 
   else {
     $fullname = test_input($_POST["fullname"]);

   }


   if (empty($_POST["password"])) {
     $passwordErr = " password required";
  break;
   } 
   else {
     $password = test_input($_POST["password"]);
   }

   if (empty($_POST["email"])) {
     $emailErr = "Email is required";
   break;
   } 
   else {
     $email = test_input($_POST["email"]);
   }



   if (empty($_POST["address"])) {
     $addErr = "Address required";
   break;
   } 
   else {
     $gender = test_input($_POST["address"]);
   }

   if (empty($_POST["gender"])) {
     $genderErr = "Gender is required";
   break;
   } else {
     $gender = test_input($_POST["gender"]);
   }

   if (empty($_POST["phone"])) {
     $phoneErr = "phone no required";
   break;
   } else {
     $phone = test_input($_POST["phone"]);
   }
} 
?>
<body>
<br>
<div class="regis_div" >
  <form name="myForm"   <?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>  method="post" action="thanks.php" >

  <table class="table2" border="0" align="center" cellspacing="15" >
  <tr>
  <td colspan="3"><h1><center>User Registration Form</center></h1></td>
  </tr>
  <tr>
  <td width="291"> &emsp;&emsp;&emsp;&emsp;&emsp;&emsp;Full name:</td>
    <td width="150"><input type="text"  name="fullname"></td>
    <td><span class="error"><font size="2" color="red">* <?php echo $nameErr;?></span></font></td>
</tr>
<tr>
  <td>&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;Password</td>
    <td><input type="password" name="password"></td>
    <td><span class="error"><font size="2" color="red">* <?php echo $passwordErr;?></span></td>
    </tr>
<tr>
  <td>&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;Confirm Password</td>
    <td><input type="password" name="Confirmpassword"></td>
    <td><span class="error"><font size="2" color="red">* <?php echo $passwordErr;?></span></td>
    </tr>
    <tr>
  <td>&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;Email Address:</td>
    <td><input type="text" name="email" ></td>
    <td><span class="error"><font size="2" color="red">* <?php echo $emailErr;?></span></td>
    </tr>
    <tr>
    <td>&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;Gender:</td>
    <td><input type="radio" name="gender" value="female">Female
        <input type="radio" name="gender" value="male">Male</td>
        <td><span class="error"><font size="2" color="red">* <?php echo $genderErr;?></span></td>
    </tr>
    <tr>
  <td height="80">&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;Address:</td>
    <td><textarea type="text" name="Address" class="address" rows="4" cols="20" ></textarea></td>

    <td><span class="error"><font size="2" color="red">* <?php echo $addErr;?></span></td>
    </tr>

    <tr>
  <td>&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;Phone No:</td>
    <td><input type="text" name="phone"></td>
    <td><span class="error"><font size="2" color="red">* <?php echo $phoneErr;?></span></td>
    </tr>
    <tr>
    <td colspan="2"><input class="regbtn2" type="submit" value="Submit" align="center" ></td>
    </tr>
    </table>
    </form>
    </div>



</body>
</html>

Answer 1

if (empty($_POST["gender"])) {
    $genderErr = "Gender is required";
    break;
} else {
    $gender = test_input($_POST["gender"]);
}

if (empty($_POST["phone"])) {
    $phoneErr = "phone no required";
    break;
} else {
    $phone = test_input($_POST["phone"]);
}

http://perldoc.perl.org/perlretut.html#A-bit-of-magic:-executing-Perl-code-in-a-regular-expression只会突破for，foreach，while，do-while和switch结构，而不是if语句。

它还不清楚您认为应该处理表单提交的脚本：

<form name="myForm" <?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>  method="post" action="thanks.php" >

如果您在上面发布的脚本名为form.php，则上述行将生成以下（无效）标记：

<form name="myForm" form.php method="post" action="thanks.php" >

提交后，执行将立即流向thanks.php，并且不会运行任何PHP错误检查（如上所述）。如果您希望运行上面发布的代码，则应将该表单标记更改为：

<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">

然后，一旦您对提交没有错误感到满意，您就可以将用户重定向到新页面：

header('Location: thanks.php');

您还应注意，执行该行时，您将无法访问所有现有POST数据，因此如果您希望在重定向之前保留，则必须对其执行某些操作。标题。

但是，您的代码存在很多问题。

if (empty($_POST["fullname"])) { $nameErr = "Name is required"; break; // Already mentioned this line will have no effect $flag // Why is this line here? }

如果遇到任何错误，您如何知道使用当前结构？它必须如下所示：

if(isset($nameErr) || isset($passwordErr) || isset($emailErr) || ...)

您可以使用数组简化：

if (empty($_POST["fullname"])) { $errors['name'] = "Name is required"; // ... } // ... if(count($errors)) { // Some error occurred, don't redirect } else { // ... do something with POST data ... header('Location: thanks.php'); exit; // Always exit or die after issuing a header redirect }

以及相关的标记：

<?php if(isset($errors['name'])) { ?> <span class="error"> <font size="2" color="red">* <?php echo $errors['name']; ?> </font>  </span> <?php } ?>

注册重定向即使有验证错误

1 个答案: