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我有使用 Javascript 和 PHP 的联系表。

我的问题是 javascript 没有将其变量传递给 PHP 脚本。我发现了以下内容:

变量确实在 javascript 中设置,因为它通过 javascript 内部的变量检查并使用显示变量的警报。

当它到达 PHP 脚本时,变量不再存在。我试图注释掉 PHP 脚本中的检查,然后它成功发送了一封邮件,但是除了 PHP 脚本中的静态内容之外,邮件是空的。

我尝试了各种不同的方法,包括直接从 http.send() 函数传递变量。

以下是相关代码(这些都是 Web 服务器上的 3 个不同文件):

HTML:

div class="contact_form">
            <h4>Get in touch</h4>
            <form method="post">
                <input type="text" name="Name" id="name" value="Name" onfocus="this.value = this.value=='Name'?'':this.value;" onblur="this.value = this.value==''?'Name':this.value;" />
                <input type="text" name="Email" id="email" value="Email" onfocus="this.value = this.value=='Email'?'':this.value;" onblur="this.value = this.value==''?'Email':this.value;" />
                <input type="text" value="Subject (Hosting, Requests, Appeal, Report, etc.)" id="subject" onfocus="this.value = this.value=='Subject (Hosting, Requests, Appeal, Report, etc.)'?'':this.value;" onblur="this.value = this.value==''?'Subject (Hosting, Requests, Appeal, Report, etc.)':this.value;" />
                <textarea name="Message" id="body" onfocus="this.value = this.value=='Message'?'':this.value;" onblur="this.value = this.value==''?'Message':this.value;">Message</textarea>
                <input type="submit" name="submit" id="submit" value="send" class="submit-button" onClick="return check_values();" />
            </form>
            <div id="confirmation" style="display:none; position: relative; z-index: 600; font-family: 'Open Sans', sans-serif; font-weight: 300; font-size: 16px; color: #4e4e4e;"></div>
        </div> <!-- end .contact_form -->

Javascript:

var http = createRequestObject();
var areal = Math.random() + "";
var real = areal.substring(2,6);

function createRequestObject() {
    var xmlhttp;
    try { xmlhttp=new ActiveXObject("Msxml2.XMLHTTP"); }
  catch(e) {
    try { xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");}
    catch(f) { xmlhttp=null; }
  }
  if(!xmlhttp&&typeof XMLHttpRequest!="undefined") {
    xmlhttp=new XMLHttpRequest();
  }
    return  xmlhttp;
}

function sendRequest() {
    var rnd = Math.random();
    var name = escape(document.getElementById("name").value);
    var email = escape(document.getElementById("email").value);
    var subject = escape(document.getElementById("subject").value);
    var body = escape(document.getElementById("body").value);

    try{
        http.open('POST','pform.php');
        http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        http.send('name='+name+'&email='+email+'&subject='+subject+'&body='+body+'&rnd='+rnd);
        http.onreadystatechange = handleResponse;
    }
    catch(e){}
    finally{}
}

function check_values() {
    var valid = '';

    var name = document.getElementById("name").value;
    var email = document.getElementById("email").value;
    var subject = document.getElementById("subject").value;
    var body = document.getElementById("body").value;
    if(trim(name) == "" ||
        trim(email) == "" ||
        trim(subject) == "" ||
        trim(body) == "") {
            alert("Please complete all fields");
    } else {
        if(isEmail(email)) {
            document.getElementById("submit").disabled=true;
            document.getElementById("submit").value='Please Wait..';
            sendRequest();
        } else {
            alert("Email appears to be invalid\nPlease check and try again");
            document.getElementById("email").focus();
            document.getElementById("email").select();
        }
    }
}

function handleResponse() {
    try{
    if((http.readyState == 4)&&(http.status == 200)){
        var response = http.responseText;
      document.getElementById("confirmation").innerHTML = response;
      document.getElementById("confirmation").style.display ="";
        }
  }
    catch(e){}
    finally{}
}

function isUndefined(a) {
   return typeof a == 'undefined';
}

function trim(a) {
    return a.replace(/^s*(S*(s+S+)*)s*$/, "$1");
}

function isEmail(a) {
   return (a.indexOf(".") > 0) && (a.indexOf("@") > 0);
}

PHP:

<?php
error_reporting(0);

$page_title = "Contact Us Form";
$email_it_to = "email@example.com";
$error_message = "Please complete the form first";
$confirmation = "Thank you, your message has been successfully sent.";

if(!isset($rnd) || !isset($name) || !isset($email) || !isset($subject) || !isset($body)) {
    echo $error_message;
    die();
}

    $email_from = $email;
    $email_subject = "Contact Form: ".stripslashes($subject);
    $email_message = "Please find below a message submitted by '".stripslashes($name);
    $email_message .="' on ".date("d/m/Y")." at ".date("H:i")."\n\n";
    $email_message .= stripslashes($body);

    $headers = 'From: '.$email_from."\r\n" .
   'Reply-To: '.$email_from."\r\n" .
   'X-Mailer: PHP/' . phpversion();

    mail($email_it_to, $email_subject, $email_message, $headers);

    echo "<b>$confirmation</b>";
    die();
?>
4

4 回答 4

1

您没有使用该$_POST变量来获取任何东西 - 您正在使用未设置的变量。

将所有调用更改为使用$_POST

if(!isset($rnd) || !isset($name) || !isset($email) || !isset($subject) || !isset($body))

改成:

if(!isset($_POST['rnd']) || !isset($_POST['name']) || !isset($_POST['email']) || !isset($_POST['subject']) || !isset($_POST['body']))

而且您需要在使用未定义变量的其他任何地方更改它。

或者,您可以这样做:

$rnd = mysql_real_escape_string($_POST['rnd']);
$name = mysql_real_escape_string($_POST['name']);
... and so on
于 2013-04-11T22:37:42.313 回答
0

尝试这个:

try{
    http.open('POST','pform.php?name='+name+'&email='+email+'&subject='+subject+'&body='+body+'&rnd='+rnd);
    http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
    http.onreadystatechange = handleResponse;
}
于 2013-04-11T22:36:58.943 回答
0

使用 $_POST 访问 POST 变量:

if (!isset($_POST["my_post_variable"]) {
 die('No post arguments passed.');
} 
于 2013-04-11T22:45:12.983 回答
0

这是因为 Javascript 是客户端脚本语言,而 PHP 是服务器端。所以不能通过PHP直接访问javascript的变量。

您可以访问 HTML 表单发布的值

<?php
$var_name = $_POST['name_of_the_variable_to_access'];
//then access these variables in your code.
?>

您也可以在 php 脚本的开头尝试这一行代码,但您需要确保不会在您的 php 代码中重新分配变量值。

<?
extract($_POST);
//your code here.
?>

使用上面的代码,您将获得变量中的 HTML 页面值 - $Name、$Email、$Message。

是的,您需要为消息字段命名。最好只用小写写名字

于 2013-04-11T22:47:50.843 回答