錯誤尋呼 - 回聲到HTML頁面

Question

你好，

我想知道我怎麼能有任何和所有的錯誤（當表單提交）鏈接到一般錯誤頁面「的鏈接的error.html」 。我現在正在使用的PHP表單，鏈接到它本身，只是一個醜陋的頁面，沒有CSS格式。我是否需要將回聲鏈接到「error.html」？

我用下面的HTML表單的工作：

<div id="contact"> 
    <form name="contactform" method="post" action="send_form_email.php"> 
     <label for="first_name">First <span class="red">*</span></label> 

     <input type="text" name="first_name" maxlength="50" size="30"> 
     <label for="last_name">Last <span class="red">*</span></label> 

     <input type="text" name="last_name" maxlength="50" size="30"> 
     <label for="email">Email <span class="red">*</span></label> 

     <input type="text" name="email" maxlength="80" size="30"> 
     <label for="telephone">Telephone</label> 

     <input type="text" name="telephone" maxlength="30" size="30"> 
     <label for="comments">Message <span class="red">*</span></label> 

     <textarea name="comments" maxlength="1000" cols="25" rows="6"></textarea> 
     <input type="submit" value="Send Message"><a href="mailto:infor@glustik.com">Email Form</a> 
</form> 
     </div> 

這是我使用的PHP文件：

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

    // EDIT THE 2 LINES BELOW AS REQUIRED 
    $email_to = "info@glustik.com"; 
    $email_subject = "Project Quote Request"; 


    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['telephone']) || 
     !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 
    $telephone = $_POST['telephone']; // not 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); 
?> 

<!-- MY THANK YOU SUCCESS PAGE GOES HERE --> 

<?php 
} 
?> 

Answer 1

這是更好地展示表單驗證錯誤伴隨着形式。這樣用戶將得到直接的反饋。

您可以對所有錯誤消息使用數組。

<?php 

$errors = array(); 

if(!isset($_POST['email'])) { 
$errors['email'] = 'Email is required'; 
} 
//similarly for other errors. 

形式

現在

<input type="text" name="last_name" maxlength="50" size="30"> 
<label for="email">Email <span class="red">*</span></label> 
<?= if(isset($errors['email'])) echo $errors['email'] ?>