Question

我对php表单有疑问。我已经在现有表单中添加了一个复选框，但不确定如何将其添加到php。如果访问者检查它，我希望发送“是”，如果不是，则发送“否”。

<form method="POST" name="contactform" action="contact-form-handler.php"> 
<p>
<input type="text" name="name" placeholder="name">
</p>
<p>
<input type="tel" name="tel" placeholder="phome"> <br>
</p>
<p>
<input type="text" name="email" placeholder="mail"> <br>
</p>
<p>
<input type="checkbox" name="newsletter[]" value="newsletter" checked>i want to sign up   for newsletter<br>
</p>
<input type="submit" value="Submit"><br>
</form>

这里是表单的php代码，除了复选框之外的所有内容。我收到邮件时需要知道它的价值。例如：“姓名：约翰，电子邮件：test @ test.com，电话：12345，通讯：是”

<?php 
$errors = '';
$myemail = 'test@gmail.com';//<-----Put Your email address here.
if(empty($_POST['name'])  || 
   empty($_POST['email']) || 
   empty($_POST['tel']))
{
    $errors .= "\n Error: all fields are required";
}

$name = $_POST['name']; 
$email_address = $_POST['email']; 
$message = $_POST['tel']; 


if (!preg_match(
"/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$/i", 
$email_address))
{
    $errors .= "\n Error: Invalid email address";
}

if( empty($errors))
{
    $to = $myemail; 
    $email_subject = "Contact form submission: $name";
    $email_body = "You have received a new message. ".
    " Here are the details:\n Name: $name \n Email: $email_address \n Tel \n $message\n Newsletter \n $newsletter"
}
    ; 


    $headers = "From: $myemail\n"; 
    $headers .= "Reply-To: $email_address";

    mail($to,$email_subject,$email_body,$headers);
    //redirect to the 'thank you' page
    header('Location: contact-form-thank-you.html');
} 
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 
<html>
<head>
    <title>Contact form handler</title>
</head>

<body>
<!-- This page is displayed only if there is some error -->
<?php
echo nl2br($errors);
?>


</body>
</html>

谢谢，

Answer 1

以下是在检查时返回简单Yes时的样子。

<input type="checkbox" id="newsletter" name="newsletter" value="Yes" checked>
<label for="newsletter">i want to sign up for newsletter</label>

我还将文本添加为标签，这意味着您也可以单击文本以选中该框。小但是，我个人讨厌网站让我把鼠标对准这个小小的复选框。

如果选中该复选框，则提交表单时$_POST['newsletter']将等于Yes。您如何检查$_POST['name']，$_POST['email']和$_POST['tel']是否为空，您可以这样做。

以下是如何将这些内容添加到php端的电子邮件中的示例：

现有代码下方：

$name = $_POST['name'];
$email_address = $_POST['email'];
$message = $_POST['tel'];

添加：

$newsletter = $_POST['newsletter'];
if ($newsletter != 'Yes') {
    $newsletter = 'No';
}

如果选中该复选框，则会在您的电子邮件中添加Yes，如果未选中，则会添加No。

Answer 2

如果选中该复选框，您将在$_POST数组中获取该值。如果不是，那么元素将完全从数组中省略。

测试它的最简单方法是：

if (isset($_POST['myCheckbox'])) {
  $checkBoxValue = "yes";
} else {
  $checkBoxValue = "no";
}

对于您的代码，请将其添加到其他预处理的正下方：

$name = $_POST['name']; 
$email_address = $_POST['email']; 
$message = $_POST['tel']; 

if (isset($_POST['newsletter'])) {
  $newsletter = "yes";
} else {
  $newsletter = "no";
}

您还需要稍微更改HTML。改变这一行：

<input type="checkbox" name="newsletter[]" value="newsletter" checked>i want to sign up for newsletter<br>

到此：

<input type="checkbox" name="newsletter" value="newsletter" checked>i want to sign up   for newsletter<br>
                                      ^^^ remove square brackets here.

Answer 3

if(isset($_POST["newsletter"]) && $_POST["newsletter"] == "newsletter"){
    //checked
}

Answer 4

尝试更改此部分，

<input type="checkbox" name="newsletter[]" value="newsletter" checked>i want to sign up   for newsletter

这个

<input type="checkbox" name="newsletter" value="newsletter" checked>i want to sign up   for newsletter

Answer 5

替换：

$name = $_POST['name']; 
$email_address = $_POST['email']; 
$message = $_POST['tel'];

<强>与

$name = $_POST['name']; 
$email_address = $_POST['email']; 
$message = $_POST['tel'];
if (isset($_POST['newsletter'])) {
  $checkBoxValue = "yes";
} else {
  $checkBoxValue = "no";
}

然后替换这行代码：

$email_body = "You have received a new message. ".
    " Here are the details:\n Name: $name \n Email: $email_address \n Tel \n $message\n Newsletter \n $newsletter"

<强>与

$email_body = "You have received a new message. ".
    " Here are the details:\n Name: $name \n Email: $email_address \n Tel \n $message\n Newsletter \n $newsletter";

以PHP格式发送复选框值

5 个答案: