html和php聯繫表單故障

Question

有人可以告訴我我的代碼有什麼問題。我無法弄清楚錯誤是什麼。

接觸形式

<form action="mail.php" method="POST"> 
       <p>Name</p> <input type="text" name="name"> 
       <p>Email</p> <input type="text" name="email"> 
       <p>Phone</p> <input type="text" name="telephone"> 

       <p>Request Phone Call:</p> 
       Yes:<input type="checkbox" value="Yes" name="call"> 
       No:<input type="checkbox" value="No" name="call"><br /> 

       <p>Priority</p> 
       <select name="priority" size="1"> 
        <option value="Low">Low</option> 
        <option value="Normal">Normal</option> 
        <option value="High">High</option> 
        <option value="Emergency">Emergency</option> 
       </select> 
       <br /> 

       <p>Type</p> 
       <select name="type" size="1"> 
        <option value="update">Website Update</option> 
        <option value="change">Information Change</option> 
        <option value="addition">Information Addition</option> 
        <option value="new">General Enquiries</option> 
       </select> 
       <br /> 

       <p>Message</p><textarea name="message" rows="10" cols="40"></textarea><br /> 
       <input type="submit" value="Send" class="button"/><input type="reset" value="Clear" class="button"/> 
      </form> 

mail.php

<?php 

if(isset($_POST['email'])) { 

$email_to = "myemail@sky.com"; 
$email_subject = "Tip Top Music"; 

function died($error) { 

    // Error codes 
    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(); 

} 

// Required fields 
if(!isset($_POST['name']) || 
    !isset($_POST['email']) || 
    !isset($_POST['message'])) { 

    died('Required Fields are not complete');   
} 

$name = $_POST['name']; // required 
$email_from = $_POST['email']; // required 
$telephone = $_POST['telephone']; // not required 
if(!isset($_POST['call'])) { 
$call = "No"; // if checkbox was left unchecked. Default is No 
} 
else { 
    $call = ($_POST['call']) 
} 
$priority = $_POST['priority']; // Will already have default value 
$type = $_POST['type']; // Will already have default value 
$message = $_POST['message']; // 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($string_exp,$name)) { 
    $error_message .= 'The Name you entered does not appear to be valid.<br />'; 
} 

if(strlen($message) < 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); 
} 

$email_message .= "Name: ".clean_string($name)."\n"; 
$email_message .= "Email: ".clean_string($email_from)."\n"; 
$email_message .= "Request Callback: ".($call)."\n"; 
$email_message .= "Telephone: ".clean_string($telephone)."\n"; 
$email_message .= "Priority: ".($priority)."\n"; 
$email_message .= "Type: ".($type)."\n"; 
$email_message .= "Message: ".clean_string($message)."\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); 

?> 

<!-- Message success --> 

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

<?php 


} 

?> 

我得到了一個未定義指數看漲指向$調用= 「否」;線。但是腳本甚至不應該運行，因爲我發佈了一個空白表單？當我回顯輸入字段時，它們是空白的，但是如果放入IF語句來檢查它們是否被設置（isset），它會進入語句，就好像它們已被設置一樣？我應該使用isset以外的東西來檢查空輸入嗎？這通常很困惑，爲什麼它現在不是？

Answer 1

失蹤分號上$_POST['call']

if(!isset($_POST['call'])) { 
$call = "No"; // if checkbox was left unchecked. Default is No 
} 
else { 
    $call = $_POST['call']; // Missing semicolon here 
} 

Answer 2

您的代碼添加缺少分號$ _ POST [ '呼']後工作正常;

正確的一個應該是$ call =（$ _POST ['call']）;

當提交空表單時會給出錯誤信息。所以我認爲驗證工作正常。