我已经坚持了一段时间，并尝试了不同的代码变体，已经读取了多个堆栈溢出内容，但没有一个工作，我真的需要得到一些帮助，我做错了什么。我的注册页面效果很好但是当我想用注册的详细信息登录时，它会一直说“登录失败”。任何帮助将不胜感激。谢谢。
我的connection.php代码：
<?php
/****Connetion to database details****/
$dbh = new mysqli("localhost","root","","mydatabase");
// Check connection
if ($dbh->connect_errno)
{
echo "Connection to MySQL unsuccessfull!: (" . $dbh->connect_errno . ") " . $dbh->connect_error;
}
?>
我的login.php代码：
<?php
session_start();
include "include_files/connect.php";
include "include_files/header.php";
if(isset($_POST['submit']))
{
$username = validate($_POST['username']);
$password = validate($_POST['password']);
$hash = password_hash($password, PASSWORD_DEFAULT);
if(!empty($username) && !empty($password))
{
$query = $dbh->prepare("SELECT username, password FROM users WHERE username = ? AND password = ? ");
$query->bind_param('ss', $username, $hash);
$query->execute();
$query->store_result();
$query->bind_result($username, $hash);
if($query->num_rows > 0)
{
$query->fetch();
$_SESSION['username'] = $username;
header('location: index.php');
exit();
}
else
{
echo "Login Failed";
}
}
else
{
echo "Your details do not exist!";
}
}
/**With thanks to W3Schools**/
function validate($input)
{
$input = trim($input);
$input = stripslashes($input);
$input = htmlspecialchars($input);
return $input;
}
?>
<div id="login_form">
<form action="login.php" id="loginForm" method="POST" autocomplete="off">
<label id="labels">Username:</label> <input name="username" type="text" id="tbox" placeholder="Username" />
<br />
<br />
<label id="labels">Password:</label> <input name="password" type="password" id="tbox" placeholder="******" /><br /><br />
<input type="submit" id="login" name="submit" value="Submit" />
</form>
<br />
</div>
registration.php代码：
$nameError = $snameError = $passwordError = $emailError = "";
$pwordError = $mailError = "";
if ($_SERVER["REQUEST_METHOD"] == "POST") {
$success = "Registration complete! Please activate your account using link sent to your email.";
$username = validate($_POST['username']);
$validChar = array('-', '_');
$email = validate($_POST['email']);
$cEmail = validate($_POST['cEmail']);
$password = validate($_POST['password']);
$cPassword = validate($_POST['cPassword']);
$hash = password_hash($password, PASSWORD_DEFAULT);
$joinDate = date("Y-m-d");
$activateCode = password_hash(mt_rand(0,999), PASSWORD_DEFAULT);
$emailChecker = $dbh->query("SELECT email FROM users WHERE email = '$email' ");
//$sql = $conn->prepare($emailChecker);
//$sql->execute();
if(empty($username) || empty($password) || empty($cPassword) || empty($email) || empty($cEmail)) {
$errors[] = 'All fields must be completed!';
}else {
/*if(!preg_match("#^[A-Za-z' ]*$#",$firstname)) {
$nameError = 'Please enter a valid firstname!.';
}*/
if(!preg_match("#^[A-Za-z' ]*$#",$username)) {
$snameError = 'Please enter a valid surname!.';
}
if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$email)) {
$emailError = "Please enter a valid email format!";
}
if ($password==$cPassword) {
} else {
$pwordError = 'Passwords do not match!';
}
if ($email==$cEmail) {
} else {
$mailError = 'The Email\'s provided do not match!';
}
if($emailChecker->num_rows == 1) {
die("Email address already registered!");
}
if (strlen($password) < 5) {
$errors[] = 'Password must be at least 5 characters.';
}
$password = password_hash($password, PASSWORD_DEFAULT);
$cPassword = password_hash($cPassword, PASSWORD_DEFAULT);
}
if (!empty($errors))
foreach ($errors as $error){
echo '<div id= "errmsg">' .$error. '</div>';
} else {
echo '<div id= "success">' .$success. '</div>';
$insert = "INSERT INTO users (username, password, email, activateCode, joinTimeDate) VALUES ('$username',
'$hash', '$email', '$activateCode', '$joinDate') ";
//$result = $dbh->prepare($insert);
//$result->bind_param('sssssd', $username, $hash, $email, $accessLevel, $activateCode, $joinDate);
$query = $dbh->query($insert);
$to = $email; //users email to send to
$subject = 'Account verification'; //subject of email
//message and link//
mail($to, $subject,
' Hello!
Thank you for joining our website.
We have created your account, you may log in using your email:
' .$email. ' and password after activating your account with the below link.
Click link here to activate your account:
http://localhost/public_html/verification.php?email='.$email.'&activateCode='.$activateCode.'');
}
}
/**With thanks to W3Schools**/
function validate($input)
{
$input = trim($input);
$input = stripslashes($input);
$input = htmlspecialchars($input);
return $input;
}
?>
<div id="reg_div">
<a href="login.php"><img src="images/login_img.jpg" alt="Login" id="loginimg" /></a>
<form id="reg_form" method="POST" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
<label id="alabel">Username:</label>
<input type="text" name="username" id="firstname" placeholder="Username" required/>
<span id="error">* <?php echo $nameError; ?></span>
<br />
<br />
<label id="alabel">Password:</label>
<input type="password" name="password" id="password" placeholder="********" onblur="checkPass(); return false;" required/>
<span id="error">* <?php echo $passwordError; ?></span>
<br />
<br />
<label id="alabel">Confirm password:</label>
<input type="password" name="cPassword" id="cPassword" placeholder="********" onkeyup="confirmPass(); return false;" required/>
<span id="error">*</span>
<br />
<br />
<label id="alabel">Email:</label>
<input type="email" name="email" id="email" placeholder="example@example.com" required/>
<span id="error">* <?php echo $emailError; ?></span>
<br />
<br />
<label id="alabel">Confirm email:</label>
<input type="email" name="cEmail" id="cEmail" placeholder="example@example.com" required/>
<span id="error">*</span>
<br />
<br />
<input type="reset" width="55" height="55" id="reset" name="reset" value="Reset" onclick="resetFunction()" /> <input type="submit" width="55" height="55" id="submit" name="submit" value="Submit" />
</form>
</div>
<div id="horizontal_line"></div>