如何在一个页面的不同部分之间发送消息？
如何在一个页面的不同部分之间发送消息？
提问于 2012-07-10 11:52:30
基本上，在以下代码中：
<?php
$hostname = '';
$username = '';
$password = '';
$dbn = '';
try {
$dbh = mysqli_connect($hostname , $username, $password ,$dbn);
//echo 'Connected to database';
}
catch(PDOException $e)
{
echo $e->getMessage();
}
if (isset($_POST['formsubmitted'])) {
$fullname = $_POST['fullname'];
$username = $_POST['username'];
$email1 = $_POST['email1'];
$password1 = $_POST['password1'];
$dob = $_POST['dob'];
$query_verify_email = "SELECT * FROM User WHERE Email = '$email1'";
$result_verify_email = mysqli_query($dbh, $query_verify_email);
if (!$result_verify_email) {//if the Query Failed ,similar to if($result_verify_email==false)
echo ' Database Error Occured ';
}
if (mysqli_num_rows($result_verify_email) == 0) { // IF no previous user is using this email .
// Create a unique activation code:
$activation = md5(uniqid(rand(), true));
//$id= uniqid();
$query_insert_user = "INSERT INTO `User` ( `Name`, `Username`, `Email`, `Password`, `DOB`, `Activation`) VALUES ( '$fullname', '$username', '$email1', '$password1', '$dob', '$activation')";
$result_insert_user = mysqli_query($dbh, $query_insert_user);
if (!$result_insert_user) {
echo 'Query did not work ';
}
if (mysqli_affected_rows($dbh) == 1) { //If the Insert Query was successfull.
// Send the email:
$message = " To activate your account, please click on this link:\n\n";
$message .= 'http://website' . '/active.php?email=' . urlencode($email1) . "&key=$activation";
mail($email1, 'Registration Confirmation', $message, 'From: a@b.com');
// Flush the buffered output.
// Finish the page:
echo '<div class="success">Thank you for registering! A confirmation email has been sent to '.$email1.' Please click on the Activation Link to Activate your account </div>';
} else { // If it did not run OK.
echo '<div class="errormsgbox">You could not be registered due to a system error. We apologize for any inconvenience.</div>';
}
} else { // The email address is not available.
echo '<div class="errormsgbox" >That email address has already been registered.
</div>';
}
mysqli_close($dbh);//Close the DB Connection
}// End of the main Submit conditional.
?>
<html>
<head>
</head>
<body>
<form name="f1" action="Main.php" method="post">
<p>Full name: <br/><input class="tb10" type="text" name="fullname" /></p>
<p>Username: <br/><input class="tb10" type="text" id="username" name="username" /><br/>
<p>Email: <br/><input class="tb10" type="text" id="email1" name="email1" /></p>
<p>Re-Enter Email: <br/><input class="tb10" type="text" name="email2" /></p> <br/>
<p>Password: <br/><input class="tb10" type="password" name="password1" /></p>
<p>Re-Enter Password: <br/><input class="tb10" type="password" name="password2" /></p><br/>
<p>Date of Birth: <br/><input class="tb10" type="text" name="dob" /></br><img src="img/calendar1.gif" alt="Calendar" onclick="displayCalendar(document.forms[0].dob,'yyyy/mm/dd',this)"/></p><br/>
<div class="submit">
<input type="hidden" name="formsubmitted" value="TRUE" />
<input type="submit" value="Submit" class="button" />
</div>
</form>
</body>
</html>问题是我想要显示显示在正文部分顶部(在html部分之前)的消息。这意味着当用户完成注册时，将显示消息，而不是正文部分中的字段(Name、UserName、Email等...)。
要说明它，请执行以下操作：
如果注册是有效的，我想要消息：
Thank you for registering! A confirmation email has been sent to '.$email1.' Please click on the Activation Link to Activate your account显示在正文部分(而不是字段)。
我希望你能理解我的解释。
回答 3
Stack Overflow用户
发布于 2012-07-10 11:56:26
在php部分将一个变量设为regSuccess，根据用户注册是否成功，将其设置为true或false。
然后在html部分，检查if条件中该变量的值，并输出相应的html。
<?php
if($regSuccess == TRUE) {
?>
Thank you message
<?php
}
else
{ ?>
the input fields
<?php
} ?>Stack Overflow用户
发布于 2012-07-10 11:59:05
使用$_SESSION变量来指示用户已成功注册。您将在页面上启动一个会话，并在执行其他操作之前检查是否设置了该值。如果该变量存在，则显示激活消息，否则提供注册字段并继续您现有的代码。
使用$_SESSION的原因是持久化页面请求之间的状态信息。
<?php
session_start();
if(isset($_SESSION['registered_email'])){
//Display message indicating user has already registered
echo 'Thank you for registering! A confirmation email has been sent to '. $_SESSION['registered_email'] .' Please click on the Activation Link to Activate your account';
}else{
// The rest of your code
...
// set session variable to indicate the registration was successful
$_SESSION['registered_email'] = $email1;
...
}
?>Stack Overflow用户
发布于 2012-07-10 11:59:23
您可以创建一个变量来存储错误消息，而不是直接回显它。并在<body>中添加一个'IF‘大小写，用于验证发生错误，回显错误，否则打印注册表。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/11406354
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