当激活状态时，警告框没有显示在正确的方向上。
当激活状态时，警告框没有显示在正确的方向上。
提问于 2018-11-23 14:29:40
我正在使用php注册。我只是让一切正常运转。将用户名填充的数据写入mySQUL数据。现在，我正在创造一个条件，即用户不能创建一个具有相同用户名的帐户。每个东西都正常工作，但是显示“用户名”的警告框没有像我想要的那样在login.php中显示，而是在registration.php中显示，并在我单击“确定”以关闭设置后返回。
首先，我尝试复制registration.php顶部的login.php代码，并将<form action="registration.php" method="post">更改为<form action="login.php" method="post">，该网站将不会像我所希望的那样工作。
我只想让警报框显示在login.php上，而不是在registration.php中
这是代码
registration.php
<?php
session_start();
// header('location:login.php');
$con = mysqli_connect('localhost','root','');
mysqli_select_db($con, 'userregistration');
$name = $_POST['user'];
$pass = $_POST ['password'];
$email = $_POST['mail'];
$phone = $_POST['phone'];
$s = " SELECT * FROM usertable WHERE name = '$name'";
$result = mysqli_query($con, $s);
$num = mysqli_num_rows($result);
if (mysqli_num_rows($result) >= 1){
$message="User already taken";
echo "<script type='text/javascript'> alert('$message');
window.location.replace(\"login.php\");
</script>";
}else {
$reg = "INSERT INTO usertable(name, password, email, phone ) values ('$name', '$pass','$email', '$phone')";
mysqli_query($con, $reg);
echo"Registration successfull";
}
?>login.php
<html>
<head>
<title> User Login</title>
<link rel="stylesheet" type="text/css" href="mainbody.css">
<link rel="stylesheet" type="text/css" href="loginheader.css">
<link rel="stylesheet" type="text/css" href="signinsignup.css">
<link rel="icon" href="../img/Polar_Bear-512.png">
</head>
<body>
<div class="loginheadercontain">
<a href="../Index.php"><div class="dotcontain backtohomepage">
<img src="047_-_homepage-512.png">
</div></a>
<div class="backtohomepage">
<a href="../Index.php">Homepage</a>
</div>
</div>
</div>
<div class="login-wrap">
<div class="login-html">
<div class="containerlogin">
<div class="avatarcontainer avatar">
<img src="avatar.jpg">
</div>
</div>
<div>
<input id="tab-1" type="radio" name="tab" class="sign-in" checked>
<label for="tab-1" class="tab">Sign In</label>
<input id="tab-2" type="radio" name="tab" class="sign-up">
<label for="tab-2" class="tab">Sign Up</label>
<div class="login-form">
<div class="sign-in-htm">
<form action="validation.php" method="post">
<div class="group">
<label for="user" class="label">Username</label>
<input id="user" type="text" name="user" class="input" placeholder="Enter Your Name" required>
</div>
<div class="group">
<label for="pass" class="label">Password</label>
<input id="pass" name="password" type="password" class="input" data-type="password" placeholder="Enter Your Password" required>
</div>
<div class="group">
<input type="submit" class="button" value="Sign In">
</div>
<div class="hr"></div>
<div class="foot-lnk">
<label for="tab-2">Let's join our community!</a>
</div>
</form>
</div>
<div class="sign-up-htm">
<form action="registration.php" method="post">
<div class="group">
<label for="user" class="label">Username</label>
<input id="user" type="text" name="user" class="input" placeholder="Enter Your Name" required>
</div>
<div class="group">
<label for="user" class="label">Password</label>
<input id="pass" name="password" type="password" class="input" data-type="password" placeholder="Enter Your Password"required>
</div>
<div class="group">
<label for="user" class="label">Phone number</label>
<input type="tel" name="phone" class="input"placeholder="Enter Your Phone Number">
</div>
<div class="group">
<label for="user" class="label">Email</label>
<input type="email" name="mail" class="input" placeholder="Enter Your Email">
</div>
<div class="group">
<input type="submit" class="button" value="Sign Up">
</div>
<div class="hr"></div>
<div class="foot-lnk">
<label for="tab-1">Already Member?</a>
</div>
</form>
</div>
</div>
</div>
</body>
</html>回答 1
Stack Overflow用户
回答已采纳
发布于 2018-11-23 15:02:15
注册表单的操作值应该是相同的login.php文件，其中还应该移动有关注册用户的逻辑。
或者您可以在registration.php中移动html (对于GET请求)，以及当您的请求被发布以运行您的php代码时。
if (isset($_POST)) {
// run php code from registration.php
} else {
?>
HTML CODE with your registration form
<?php
}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/53448528
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