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php - 使用 PHP 的 JavaScript 表单验证不发送电子邮件

转载 作者：搜寻专家 更新时间：2023-10-31 20:42:38 25 4
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我有一个对字段使用 JavaScript 验证的联系表单，但是当我将表单链接到我的 PHP 时，它不会发送电子邮件。如果有人可以帮助我，我将不胜感激。我不太熟悉 PHP 以及它如何与其他语言交互。

这是一个 live demo .

代码如下:

*编辑*

当前的 JAVASCRIPT:

<script type="text/javascript">
reEmail = /^[\w-|+|'|]+(\.[\w-|+|'|]+)*@([a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*?\.[a-zA-Z]{2,6}|(\d{1,3}\.){3}\d{1,3})(:\d{4})?$/

function myFunction()
{
var y;
y = document.getElementById('name');
var x;
x = document.getElementById('email');
var z;
z = document.getElementById('message');
var e;
e = 0;


if(y.value == "Full Name*"){
     alert("Full Name Required");
     e = e + 1
     return false;
} 

if(!(reEmail.test(x.value))){
     alert("E-Mail Invalid");
     e = e + 1
     return false;
} 

if(z.value == "Your Message*"){
    alert("Please write a message.");
    e = e + 1;
    return false;
}

if(e < 0){
    return false;   
} else {
    alert("Thank you. Your message has been sent!");
    return true;
}

}

</script>

*编辑*

当前 HTML:

<body>
<div class="form" align="center">
<form onSubmit="myFunction();" name="contact" action="sendform.php" method="post" >
    <span style="display:block;">
        <input name="name" type="text" id="name" class="txt" maxlength="50" value="Full Name*" onfocus="if(this.value==this.defaultValue)this.value='';" onblur="if(this.value=='')this.value=this.defaultValue;">
    </span>
        <br />
    <span style="display:block">
        <input name="email" type="text" id="email" class="txt" maxlength="20" value="Your E-Mail*" onfocus="if(this.value==this.defaultValue)this.value='';" onblur="if(this.value=='')this.value=this.defaultValue;" >
    </span>
        <br />
    <span style="display:block">
        <textarea name="message" type="text" id="message" class="txt" maxlength="500" value="Your Message*" onfocus="if(this.value==this.defaultValue)this.value='';" onblur="if(this.value=='')this.value=this.defaultValue;">Your Message*</textarea>
    </span>
        </form>
        <br />
    <span id="required">* Indicates Required Fields</span>
            <br />
    <input type="submit" onclick="myFunction()" class="submit" value="Submit" >

</div>
</body>

PHP(sendform.php):

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

// EDIT THE 2 LINES BELOW AS REQUIRED
$email_to = "email@domain.com";
$email_subject = "Your email subject line";


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($_POST['name']) ||
    !isset($_POST['email']) ||
    !isset($_POST['message'])) {
        died('We are sorry, but there appears to be a problem with the form you submitted.');       
}

$first_name = $_POST['name']; // required
$email_from = $_POST['email']; // required
$comments = $_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($string_exp,$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);
}

$email_message .= "Name: ".clean_string($first_name)."\n";
$email_message .= "Email: ".clean_string($email_from)."\n";
$email_message .= "Message: ".clean_string($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
}
?>

最佳答案

你的问题在这里:

if(z.value == "Your Message*"){
    alert("Please write a message.");
    return false;
    e = e + 1
} else if(z.value == "Required Field"){ 
    z.value = "Required Field"
    e = e + 1
} return false;

因为您有 return false;在右大括号之后，您的代码总是在到达该点时停止。

另外，自增e后是否返回false也不一致；有时返回 false，有时不返回 false，当返回 false 时，返回 false before 递增 e，在这种情况下 e 实际上并没有改变。你应该总是在这里做同样的事情。

此外，在您的 html 中:

<input type="submit" onclick="myFunction()" class="submit" value="Submit" >

onclick 应该是 return myFunction()，否则无论您的 javascript 函数的结果如何，表单提交总是会发生。

关于php - 使用 PHP 的 JavaScript 表单验证不发送电子邮件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/18727086/

25 4 0
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