我将我的html文件更改为php以便在表单中显示php错误，我不确定我是否想添加或减少php / html标签。我原样离开了。当我在浏览器中打开我的表单时，它向我显示以下错误。 ：
注意：未定义的变量：第165行的C：\ xampp \ htdocs \ BootstrapLandinPage \ index.php中的name_error
注意：未定义的变量：第170行的C：\ xampp \ htdocs \ BootstrapLandinPage \ index.php中的lastname_error
注意：未定义的变量：第175行的C：\ xampp \ htdocs \ BootstrapLandinPage \ index.php中的phone_error
等。
基本上每个输入都显示错误。
我的index.php：
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<title>Bootstrap 101 Template</title>
<!-- Bootstrap -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" href="font-awesome-4.7.0/css/font-awesome.min.css">
<link rel="stylesheet" href="css/style.css">
<link rel="stylesheet" href="css/animate.min.css">
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<!--NAVIGATION-->
<div id="myNavbar" class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header navbar-right">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a href="#" class="navbar-brand ">Hello Dolly</a>
</div>
<div class="navbar-collapse collapse" id="mainpanel">
<ul class="nav navbar-nav ">
<li><a href="#header">dolly</a></li>
<li><a href="#services">holly</a></li>
<li><a href="#pricing">holly</a></li>
<li><a href="#team">holly</a></li>
<li><a href="#client">holly</a></li>
<li><a href="#contact">holly</a></li>
</ul>
</div>
</div>
</div>
<!--- Header ---->
<section class="parallax">
<div class="parallax-inner">
<div id="header" class="header">
<div class="container">
<div class="row">
<div class="col-md-6 wow bounceInLeft navbar-right">
<h1 class="text-right" id="main-title">dolly </h1>
<h2 class="text-right" id="changed-title">dolly</h2><br><br>
<!--- <button class="btn btn-lg btn-primary navbar-right">dolly</button> ---->
</div>
</div>
</div>
</div>
</div>
</section>
<!-- [CONTACT] -->
<section class="inspiration" id="three">
<div class="overlay">
<div class="container">
<div class="row">
<article class="col-md-12 text-center">
<div class="intermediate-container">
<div class="heading">
<h2>יש לכם שאלה? צרו איתי קשר</h2>
</div>
<div class="row">
<div class="col-md-3 col-sm-3"></div>
<div class="col-md-6 center-block col-sm-6 ">
<form id="mc-form" action ="send.php" method="POST">
<div class="form-group col-xs-12 ">
<label for="name" hidden >שם פרטי</label>
<input type="text" name="name" id="name" class="cv form-control" value="<?= $name ?>" placeholder="שם פרטי" >
<span class="error"><?= $name_error ?></span>
</div>
<div class="form-group col-xs-12 ">
<label for="lastName" hidden>שם משפחה</label>
<input type="text" name="lastName" id="lastName" class="cv form-control" value="<?= $lastName ?>" placeholder="שם משפחה" >
<span class="error"><?= $lastname_error ?></span>
</div>
<div class="form-group col-xs-12 ">
<label for="phone" hidden>טלפון</label>
<input type="text" name="phone" id="phone" class="cv form-control" value="<?= $phone ?>" placeholder="טלפון" >
<span class="error"><?= $phone_error ?></span>
</div>
<div class="form-group col-xs-12 ">
<label for="email" hidden>דואר אלקטרוני</label>
<input type="email" name="email" id="email" class="cv form-control" value="<?= $email ?>" placeholder="דואר אלקטרוני" >
<span class="error"><?= $email_error ?></span>
</div>
<div class="form-group col-xs-12 ">
<label for="subject" hidden>נושא</label>
<input type="text" name="subject" id="subject" class="cv form-control" value="<?= $subject?>" placeholder="נושא" >
</div>
<div class="form-group col-xs-12 ">
<label for="message" hidden>הודעה</label>
<textarea name="message" id="message" class="cv form-control message" placeholder="השאירו את הודעתכם פה" rows="4" cols="50"></textarea>
</div>
<input type="submit" id="submit-button" class="btn btn-custom-outline " value="שלח" >
<br>
<div class="success"><?= $success ?></div>
<!--<span class="error"></span> -->
</form>
</div>
</div>
</div>
</article>
</div>
</div>
</div>
</section>
<!-- [/CONTACT] -->
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" ></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js" ></script>
<script src="js/bootstrap.min.js" ></script>
<!-- [ SLIDER SCRIPT ] -->
<script type="text/javascript" src="js/SmoothScroll.js"></script>
<script src="js/script.js" ></script>
</body>
</html>
send.php：
// define variables and set to empty values
$name_error = $lastname_error = $email_error = $phone_error = "";
$name = $lastName = $email = $phone = $message = $subject = $success = "";
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (empty($_POST["name"])) {
$name_error = "Name is required";
} else {
$name = test_input($_POST["name"]);
// check if name only contains letters and whitespace
if (!preg_match("/^[a-zA-Zא-ת ]*$/",$name)) {
$name_error = "Only letters and white space allowed";
}
}
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (empty($_POST["lastName"])) {
$lastname_error = "Name is required";
} else {
$lastname = test_input($_POST["lastName"]);
// check if name only contains letters and whitespace
if (!preg_match("/^[a-zA-Zא- ]*$/",$lastName)) {
$lastname_error = "Only letters and white space allowed";
}
}
if (empty($_POST["email"])) {
$email_error = "Email is required";
} else {
$email = test_input($_POST["email"]);
// check if e-mail address is well-formed
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
$email_error = "Invalid email format";
}
}
if (empty($_POST["phone"])) {
$phone_error = "Phone is required";
} else {
$phone = test_input($_POST["phone"]);
// check if e-mail address is well-formed
if (!preg_match("/^(\d[\s-]?)?[\(\[\s-]{0,2}?\d{3}[\)\]\s-]{0,2}?\d{3}[\s-]?\d{4}$/i",$phone)) {
$phone_error = "Invalid phone number";
}
}
if (empty($_POST["subject"])) {
$subject = "";
} else {
$subject = test_input($_POST["subject"]);
}
if (empty($_POST["message"])) {
$message = "";
} else {
$message = test_input($_POST["message"]);
}
if ($name_error == '' and $email_error == '' and $phone_error == '' and $lastname_error == '' ){
$message_body = '';
unset($_POST['submit']);
foreach ($_POST as $key => $value){
$message_body .= "$key: $value\n";
}
$to = 'ilonasemyweb@gmail.com';
$subjectm = 'Contact Form Submit';
if (mail($to, $subjectm, $message)){
$success = "Message sent, thank you for contacting us!";
$name = $lastName = $email = $phone = $message = $subject = '';
}
}
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
答案 0 :(得分：0)
您需要做的是：
index.php中：检查是否定义了这些变量。如果没有，那么就没有错误，因此不会显示任何错误，就像第一次进入时一样。send.php中：正确发送回错index.php。这可以使用require_once方法完成。因此，在检查所有发送的数据是否有错误后写：
if(/* there were errors */)
require_once("path/to/index.php");
然后，这将获得index.php，＆＃34的所有文本;将其放在index.php＆＃34;中的那个位置。并继续口译。使用它，send.php中定义的所有变量现在也在index.php中定义（当然也保留它们的值）。但请注意，新网址现在将以send.php结尾，除非您稍稍处理。