Question

我正在尝试在联系表单上方显示提交状态，因此我的计划是使用会话，但它无法正常工作。表单成功提交，页面成功重定向回demo.htm页面（在重定向到index2.php之后），但是没有显示任何状态消息。

我还打算使用会话，以便在空白字段上显示所需的标签，因为iOS不支持“必需的”输入标记（巨型注释掉的html表单块将替换当前的表单字段来处理iOS上的必填字段。

更新：echo有一些奇怪的事情......可能是php.ini文件的内容（如果有的话，是什么？）？

输入＃1：

 <p>Text Here</p>
<p><?php echo($_SESSION['status']); ?></p>
<p>Temp</p>
<p id="status">
<?php 
    if(isset($_SESSION['status'])){
        echo("<br/>"$_SESSION['status']."<br/>");
        unset($_SESSION['status']);
    }
?>
</p>
<p>More text here</p>

输出＃1：

Text Here

Temp

"$_SESSION['status']."
"); unset($_SESSION['status']); } ?>

More text here

输入＃2：

<?php echo strcmp("Hello world!","Hello world!")."<br/>"; ?>

输出＃2：

"; ?>

PHP：

 <?php
 session_start();

 $firstName = $lastName = $email = $companyName = $jobTitle = $phoneNumber = $comments = "";
 $noErrors = true;

 if($_POST['submit']) {
    if(empty($_POST["firstname"])) {    $_SESSION["nameErr"] = "First name is required"; $noErrors=false;} 
    else {                      $firstName = $_POST['firstname']; }
    if(empty($_POST["lastname"])) {     $_SESSION["lastErr"] = "Last name is required"; $noErrors=false;}
    else {                      $lastName = $_POST['lastname']; }
    if(empty($_POST["email"])) {        $_SESSION["emailErr"] = "Email is required"; $noErrors=false;}
    else {                      $email = $_POST['email']; }
    if(empty($_POST["companyname"])) {  $_SESSION["companyErr"] = "Company name is required"; $noErrors=false;}
    else {                      $companyName= $_POST['companyname']; }
    if(empty($_POST["position"])) {     $_SESSION["jobErr"] = "Job title is required"; $noErrors=false;}
    else {                      $jobTitle = $_POST['position']; }
    if(empty($_POST["number"])) {       $_SESSION["phoneErr"] = "Phone number is required"; $noErrors=false;}
    else {                      $phoneNumber = $_POST['number']; }

    $comments = $_POST['comments'];

    $header = "From: xxxxx.com";
    $to = 'xxxxx.com';
    $subject = 'Demo request';

    $message = "From: \r\n 
        Name: $firstName $lastName\r\n 
        E-mail: $email\r\n 
        Company Name: $companyName\r\n 
        Job Title: $jobTitle\r\n
        Phone Number: $phoneNumber\r\n
        Comments: $comments";

    if(($noErrors == true) && mail ($to, $subject, $message, $header)) {
        $_SESSION['status'] = "Your message has been sent!";
        header('Location: demo.htm');
    } else {
        $_SESSION['status'] = "Something went wrong, please try again";
        header('Location: demo.htm');
    }
    exit();
}
?>

HTML：

<?php
session_start();
?>
<!DOCTYPE html><html>
<head>*stuff*</head><body>
<p id="status">
<?php 
    if(isset($_SESSION['status'])){
        $echo $_SESSION['status'];
        unset($_SESSION['status'];
    }
?>
</p>

<div id="requestADemo">
    <p style="line-height: 2%; font-size: 24px; font-weight: 200;">Request A Demo</p>
    <p style="line-height: 2%; font-style:italic; font-size: 13px;">*indicates required field</p>

    <form method="post" action="index2.php">
        <!--p class="demo" style="margin:0;">First Name:*</p>
            <input type ="name" name="firstname" required>
            <span><?php
                if(isset($_SESSION['nameErr'])){
                    $echo $_SESSION['nameErr'];
                    unset($_SESSION['nameErr'];
                }
            ?></span>
        <p class="demo">Last Name:*</p>
            <input type ="name" name="lastname" required>
            <span><?php
                if(isset($_SESSION['lastErr'])){
                    $echo $_SESSION['lastErr'];
                    unset($_SESSION['lastErr'];
                }
            ?></span>
        <p class="demo">Email:*</p>
            <input type ="email" name="email" required>
            <span><?php
                if(isset($_SESSION['emailErr'])){
                    $echo $_SESSION['emailErr'];
                    unset($_SESSION['emailErr'];
                }
            ?></span>
        <p class="demo">Company Name:*</p>
            <input type ="name" name="companyname" required>
            <span><?php
                if(isset($_SESSION['companyErr'])){
                    $echo $_SESSION['companyErr'];
                    unset($_SESSION['companyErr'];
                }
            ?></span>
        <p class="demo">Job Title:*</p>
            <input type ="name" name="position" required>
            <span><?php
                if(isset($_SESSION['jobErr'])){
                    $echo $_SESSION['jobErr'];
                    unset($_SESSION['jobErr'];
                }
            ?></span>
        <p class="demo">Phone Number:*</p>
            <input type ="number" name="number" required>
            <span><?php
                if(isset($_SESSION['phoneErr'])){
                    $echo $_SESSION['phoneErr'];
                    unset($_SESSION['phoneErr'];
                }
            ?></span>
        <p class="demo">Comments:</p>
            <textarea name="comments" placeholder="Type Here" rows ="10" columns="50"></textarea>
        <p class="demo"><input type="submit" value="Submit" name="submit"></p-->



        <p class="demo">First Name:*<br/><input type ="name" name="firstname" required></p>
        <p class="demo">Last Name:*<br/><input type ="name" name="lastname" required></p>
        <p class="demo">Email:*<br/><input type ="email" name="email" required></p>
        <p class="demo">Company Name:*<br/><input type ="name" name="companyname" required></p>
        <p class="demo">Job Title:*<br/><input type ="name" name="position" required></p>
        <p class="demo">Phone Number:*<br/><input type ="number" name="number" required></p>
        <p class="demo">Comments:<br/><textarea name="comments" placeholder="Type Here" rows ="10" columns="50"></textarea></p>
        <p class="demo"><input type="submit" value="Submit" name="submit"></p>
    </form> 
 </body> 
 </html>

Answer 1

HTML页面不会解析PHP数据/语法，除非通过.htaccess，httpd.conf或某些类似的服务器级关联方法明确说明。

您正试图在HTML页面中显示PHP SESSION数据，直到您告诉html页面解释PHP代码才会发生这种情况。

This StackOverflow question gives you clear guides on how to achieve this

如果您的demo.htm只是一个无法处理PHP的HTML页面，那么您将看到输出（包括所有PHP代码），就像它只是HTML 一样。

示例：

demo.html（来自您的问题）：

<?php
 session_start();
 ?>
<!DOCTYPE html><html>
 <head>*stuff*</head><body>
<p id="status">
 <?php 
 if(isset($_SESSION['status'])){
       echo $_SESSION['status'];
  unset($_SESSION['status'];
  }
 ?>
 </p>

由于<和>是HTML解析器的开始和结束标记，因此将其视为HTML，因此会产生大量输出。

我还从$语句中删除了echo，因为echo是一个函数而不是变量。

解决方案：

虽然我上面给出的链接很有用，但最简单，最简单的方法是将demo.htm重命名为demo.php，以指示服务器将页面解析为PHP页面。您需要更新页面的链接（例如表单操作标记），但这意味着服务器将正确处理页面。

使用PHP会话显示状态消息

1 个答案:

解决方案：