Question

对不起，我一直在试图解决这个问题几周，所以请你帮助我！我只需要从表单中发布我的PHP错误，例如，如果你没有发布你的名字它会说'你输入的名字似乎没有效果'只有我想要它们在那里推送数据，任何帮助表示赞赏！

HTML CODE！

<form name="contactform" method="post" action="send_form_email.php">
<table width="450px">
<tr>
 <td valign="top">
  <label for="first_name">First Name *</label>
 </td>
 <td valign="top">
  <input  type="text" name="first_name" maxlength="50" size="30">
 </td>
</tr>
<tr>
 <td valign="top"">
  <label for="last_name">Last Name *</label>
 </td>
 <td valign="top">
  <input  type="text" name="last_name" maxlength="50" size="30">
 </td>
</tr>
<tr>
 <td valign="top">
  <label for="email">Email Address *</label>
 </td>
 <td valign="top">
  <input  type="text" name="email" maxlength="80" size="30">
 </td>
</tr>
<tr>
 <td valign="top">
  <label for="comments">Comments *</label>
 </td>
 <td valign="top">
  <textarea  name="comments" maxlength="1000" cols="25" rows="6"></textarea>
 </td>
</tr>
<tr>
 <td colspan="2" style="text-align:center">
  <input type="submit" value="Submit">   <a href="http://www.freecontactform.com/email_form.php">Email Form</a>
 </td>
</tr>
</table>
</form>

PHP代码！

<?php
if(isset($_POST['email'])) {

    // EDIT THE 2 LINES BELOW AS REQUIRED
    $email_to = "support@chattrd.com";
    $email_subject = "Support";


    function died($error) {
        // your error code can go here
        echo "We are very sorry, but there were error(s) found with the form you submitted. ";
        echo "These errors appear below.<br /><br />";
        echo $error."<br /><br />";
        echo "Please go back and fix these errors.<br /><br />";
        die();
    }

    // validation expected data exists
    if(!isset($_POST['first_name']) ||
        !isset($_POST['last_name']) ||
        !isset($_POST['email']) ||
        !isset($_POST['comments'])) {
        died('We are sorry, but there appears to be a problem with the form you submitted.');       
    }

    $first_name = $_POST['first_name']; // required
    $last_name = $_POST['last_name']; // required
    $email_from = $_POST['email']; // required
    $comments = $_POST['comments']; // required

    $error_message = "";
    $email_exp = '/^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/';
  if(!preg_match($email_exp,$email_from)) {
    $error_message .= 'The Email Address you entered does not appear to be valid.<br />';
  }
    $string_exp = "/^[A-Za-z .'-]+$/";
  if(!preg_match($string_exp,$first_name)) {
    $error_message .= 'The First Name you entered does not appear to be valid.<br />';
  }
  if(!preg_match($string_exp,$last_name)) {
    $error_message .= 'The Last Name you entered does not appear to be valid.<br />';
  }
  if(strlen($comments) < 2) {
    $error_message .= 'The Comments you entered do not appear to be valid.<br />';
  }
  if(strlen($error_message) > 0) {
    died($error_message);
  }
    $email_message = "Form details below.\n\n";

    function clean_string($string) {
      $bad = array("content-type","bcc:","to:","cc:","href");
      return str_replace($bad,"",$string);
    }

    $email_message .= "First Name: ".clean_string($first_name)."\n";
    $email_message .= "Last Name: ".clean_string($last_name)."\n";
    $email_message .= "Email: ".clean_string($email_from)."\n";
    $email_message .= "Telephone: ".clean_string($telephone)."\n";
    $email_message .= "Comments: ".clean_string($comments)."\n";


// create email headers
$headers = 'From: '.$email_from."\r\n".
'Reply-To: '.$email_from."\r\n" .
'X-Mailer: PHP/' . phpversion();
@mail($email_to, $email_subject, $email_message, $headers);  
?>

<!-- include your own success html here -->

Thank you for contacting us. We will be in touch with you very soon.

<?php
}
?>

Answer 1

你不想死于错误。我建议将每个错误消息放入一个数组中，然后如果该数组不为空，则将该数组放入一个会话变量并重定向回到表单页面。确保将session_start（）放在两个页面的顶部。

$errors = array();
if(!preg_match($email_exp,$email_from)) {
    $errors['email'] =  'The Email Address you entered does not appear to be valid.<br />';
}
$string_exp = "/^[A-Za-z .'-]+$/";
if(!preg_match($string_exp,$first_name)) {
    $errors['first_name'] =  'The First Name you entered does not appear to be valid.<br />';
}
if(!preg_match($string_exp,$last_name)) {
    $errors['last_name'] =  'The Last Name you entered does not appear to be valid.<br />';
}
if(strlen($comments) < 2) {
    $errors['comments'] =  .= 'The Comments you entered do not appear to be valid.<br />';
}
if(!empty($errors)) {
    $_SESSION['errors'] = $errors;
    header('Location: form_page.php');
    exit;
}

然后，您可以使用

检查表单页面上的错误

if(!empty($_SESSION['errors']['email'])){
   echo $_SESSION['errors']['email'];
}

Answer 2

使用php会话将错误消息发送回表单页面。

首先确保通过添加以下内容在每个页面上启动会话：

<?php session_start() ?>

在每个页面的开头，（确保它是第一个代码）

然后，在检查是否有错误消息的表单处理页面上，将错误消息分配给会话变量并重定向：

if(strlen($error_message) > 0) {
    $_SESSION['errors'] = $error_message;
    header("Location:<--path to form file-->");

}

在“表单”页面上，您可以添加一个将检查错误消息的部分，并在以下情况下显示它们：

<?php if(isset($_SESSION['error'])){
          echo $_SESSION['error'];
      }

您还需要在表单处理文件的开头取消设置$ _SESSION ['error']，以便将其清除以进行重新验证：

if(isset($_SESSION['error']){
    unset($_SESSION['error']);
}

这是一种非常简单的方法，可以改进，但希望它可以让你开始。

将php表单错误放在同一页面上

2 个答案: