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php - 论坛刷新后不重新显示

转载 作者：行者123 更新时间：2023-11-29 13:28:09 26 4
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我创建了一个包含 MySQL 的登录页面。如果用户输入正确的信息，则会将他们带到另一个页面，但是，如果他们没有输入正确的信息，则页面应刷新，并在顶部显示错误。目前，我的代码正在刷新页面，顶部有错误，但没有论坛可以登录。我不知道出了什么问题......

<?php
define("HOST", "localhost"); // The host you want to connect to.
define("USER", "root"); // The database username.
define("PASSWORD", "root"); // The database password. 
define("DATABASE", "dfa24"); // The database name.
session_start(); 
if($_SERVER['REQUEST_METHOD'] === 'POST'){ 

$mysqli = new mysqli(HOST, USER, PASSWORD, DATABASE)
or die("Failed to connect");
if(isset($_POST['submit'])) {
    date_default_timezone_set('America/Phoenix');
    $username = mysql_real_escape_string($_POST['username']); 
    $password = mysql_real_escape_string($_POST['password']);
$sql = "SELECT * FROM Member WHERE loginName = '".$username."' AND password ='".$password. "'"; //checks for user in database
$result = $mysqli->query($sql) or die($mysqli->error); //shoots an error if something is wrong
    if($result->num_rows < 1) // if the username/password is incorrect then an error message appears
{
    echo "Invalid username/password combination. Please try again.";
    $_SESSION['logged'] = '0';
}
else
{

    $_SESSION['logged']='1';
    $sql = " INSERT INTO Login (loginName,loginTime, loggedIn) 
       VALUES ('$username', NOW(), '1' ) "; // creates the login time.
    $result = $mysqli->query($sql) or die ($mysqli->error); // shoots an error if i did something wrong.
    $_SESSION['logname'] = $userlogin;
    header("Location: MemberHomeScreen.php");
    exit();
}
} else{

$x = false;
$defaults = array("username" => "", "password" => "");
$errors = array();

if(isset($_POST['submit'])) // Checks that the submit button has been pressed.
{   
    $x = true;  
    if(!isset($_POST['password']) || $_POST['password'] === '') // Checks to make sure there is a message in the message box.
    {
        $x = false;
    array_push($errors, "** Please enter a password **");//Pushes an error
} else {
    $defaults['password'] = $_POST['password']; //stores the item, so we do not lose it if there is an error.
}
            if(!isset($_POST['username']) || $_POST['username'] === '') // Checks to make sure there is a message in the message box.
            {
                $x = false;
    array_push($errors, "** Please enter a username **");//Pushes an error
} else {
    $defaults['username'] = $_POST['username']; //stores the item, so we do not lose it if there is an error.
}
 }
 }
}
?>
<html> 
<head>
<title> Member's Only Page </title>
</head>
<body>
<?php
echo "<h1> Please Sign In </h1>";
$userloginstuff = array("username" => "Username: ", "password" => "Password: ");
if($x === false){
foreach($errors as $error){ // goes through my errors and echos them in HTML.

 echo "<div class='error'> $error </div>";
}

  echo '<form action="" method="post">';

 foreach ($userloginstuff as $name => $label){

  echo "<div class = 'field'>",

 "<label for='$name'>$label</label>";
 echo "<input type='text' name='$name' id='$name' value=' '>";

}
echo "<input type='submit' name='submit'>";
}

echo"<br>";
echo "Don't have a username? <a href='Registration.php'> Click here.</a>"

?>
</body>
</html>

最佳答案

你的代码读起来很糟糕，请用制表符适当间隔。

我认为你的问题是你的登录表单包含在其中:

if($x === false)

登录失败时尝试设置$x = false;:

echo "Invalid username/password combination. Please try again.";
$_SESSION['logged'] = '0';
$x = false;

关于php - 论坛刷新后不重新显示，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19848880/

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