Create a Password Reminder Using PHP

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Tiempo de lectura: 7 minutos

}
// Token is valid, update the user’s password
$user_id = mysqli_fetch_assoc($result)[‘id’];
if ($password != $confirm_password) {
// Passwords don’t match, display error message
}
$hashed_password = password_hash($password, PASSWORD_DEFAULT);
$sql = “UPDATE users SET password = ‘$hashed_password’, token = NULL WHERE id = $user_id”;
mysqli_query($connection, $sql);
echo “Your password has been successfully updated!”;

This tutorial is just a basic guide for implementing a password reminder system in PHP. We recommend following best security practices and data validation to avoid vulnerabilities in your application.





Hello, today I’m going to show you how to create a password reminder using PHP + HTML.

First, create a table in your database to store user data, including their passwords. The table could have the following fields: id, name, email, and password.

CREATE TABLE users (
  id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  name VARCHAR(30) NOT NULL,
  email VARCHAR(50) NOT NULL,
  password VARCHAR(255) NOT NULL
);

2. Create a page on your website where users can enter their email address to request password recovery.

<!DOCTYPE html>
<html>
<head>

</head>
<body>


</body>
</html>

3. When the user submits the form, PHP should verify if the provided email exists in the database. If it’s not found, display an error message to the user. Otherwise, generate a unique token and store it in the database for that user.

$email = $_POST['email'];

$sql = "SELECT id FROM users WHERE email = '$email'";
$result = mysqli_query($connection, $sql);

if (mysqli_num_rows($result) == 0) {
  echo "Email not found in database";
} else {
  $token = bin2hex(random_bytes(32));
  $user_id = mysqli_fetch_assoc($result)['id'];
  $sql = "UPDATE users SET token = '$token' WHERE id = $user_id";
  mysqli_query($connection, $sql);
  // Send email with password reset link containing the token
  // Display success message to the user
}

function generateToken() {
  // Generate a unique token
  // Return the token
}

4. Send an email to the user with a link containing the token generated in the previous step. The link should direct the user to a page where they can reset their password.

$to = $email;
$subject = "Password Reset";
$message = "To reset your password, click on the following link: https://your-website.com/reset-password.php?token=$token";
$headers = "From: Your Website <noreply@your-website.com>\r\n";
$headers .= "Reply-To: Your Website <noreply@your-website.com>\r\n";
$headers .= "Content-type: text/html\r\n";

mail($to, $subject, $message, $headers);

5. When the user clicks on the link sent via email, they are directed to the password reset page. This page should verify that the provided token is valid and associated with a user in the database.

$token = $_GET['token'];

$sql = "SELECT id FROM users WHERE token = '$token'";
$result = mysqli_query($connection, $sql);

if (mysqli_num_rows($result) == 0) {
  // Invalid token, display error message
} else {
  // Token is valid, allow the user to reset their password
}

6. If the token is valid, display a form where the user can enter a new password.

When the user submits the form, PHP should update the password in the database and remove the token associated with the user.

<!DOCTYPE html>
<html>
<head>

</head>
<body>



</body>
</html>

Finally, display a confirmation message to the user that their password has been successfully updated. And save it in the database:

$token = $_POST['token'];
$password = $_POST['password'];
$confirm_password = $_POST['confirm_password'];

$sql = "SELECT id FROM users WHERE token = '$token'";
$result = mysqli_query($connection, $sql);

if (mysqli_num_rows($result) == 0) {
  // Invalid token, display error message
} else {
  $row = mysqli_fetch_assoc($result);
  $user_id = $row['id'];
$hashed_password = password_hash($password, PASSWORD_DEFAULT);
$sql = "UPDATE users SET password = '$hashed_password', token = NULL WHERE id = $user_id";
mysqli_query($connection, $sql);
// Display success message to the user
}


Finally, display a confirmation message to the user that their password has been successfully updated. And save it in the database:

$token = $_POST['token'];
$password = $_POST['password'];
$confirm_password = $_POST['confirm_password'];

$sql = "SELECT id FROM users WHERE token = '$token'";
$result = mysqli_query($connection, $sql);

if (mysqli_num_rows($result) == 0) {
  // Invalid token, display error message
} else {
  $row = mysqli_fetch_assoc($result);
  $user_id = $row['id'];
  $hashed_password = password_hash($password, PASSWORD_DEFAULT);
  $sql = "UPDATE users SET password = '$hashed_password', token = NULL WHERE id = $user_id";
  mysqli_query($connection, $sql);
  echo "Your password has been successfully updated!";
}

This tutorial is just a basic guide for implementing a password reminder system in PHP. We recommend following best security practices and data validation to avoid vulnerabilities in your application.





Hello, today I’m going to show you how to create a password reminder using PHP + HTML.

First, create a table in your database to store user data, including their passwords. The table could have the following fields: id, name, email, and password.

CREATE TABLE users (
  id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  name VARCHAR(30) NOT NULL,
  email VARCHAR(50) NOT NULL,
  password VARCHAR(255) NOT NULL
);

2. Create a page on your website where users can enter their email address to request password recovery.

<!DOCTYPE html>
<html>
<head>

</head>
<body>


</body>
</html>

3. When the user submits the form, PHP should verify if the provided email exists in the database. If it’s not found, display an error message to the user. Otherwise, generate a unique token and store it in the database for that user.

$email = $_POST['email'];

$sql = "SELECT id FROM users WHERE email = '$email'";
$result = mysqli_query($connection, $sql);

if (mysqli_num_rows($result) == 0) {
  echo "Email not found in database";
} else {
  $token = bin2hex(random_bytes(32));
  $user_id = mysqli_fetch_assoc($result)['id'];
  $sql = "UPDATE users SET token = '$token' WHERE id = $user_id";
  mysqli_query($connection, $sql);
  // Send email with password reset link containing the token
  // Display success message to the user
}

function generateToken() {
  // Generate a unique token
  // Return the token
}

4. Send an email to the user with a link containing the token generated in the previous step. The link should direct the user to a page where they can reset their password.

$to = $email;
$subject = "Password Reset";
$message = "To reset your password, click on the following link: https://your-website.com/reset-password.php?token=$token";
$headers = "From: Your Website <noreply@your-website.com>\r\n";
$headers .= "Reply-To: Your Website <noreply@your-website.com>\r\n";
$headers .= "Content-type: text/html\r\n";

mail($to, $subject, $message, $headers);

5. When the user clicks on the link sent via email, they are directed to the password reset page. This page should verify that the provided token is valid and associated with a user in the database.

$token = $_GET['token'];

$sql = "SELECT id FROM users WHERE token = '$token'";
$result = mysqli_query($connection, $sql);
if (mysqli_num_rows($result) == 0) {
echo "Invalid token";
} else {
// Token is valid, display the password reset form
}
function validateToken() {
// Validate the token from the URL
// Return true if valid, false otherwise
}

6. If the token is valid, display a form where the user can enter a new password.

When the user submits the form, PHP should update the password in the database and remove the token associated with the user.

<!DOCTYPE html>
<html>
<head>

</head>
<body>


</body>
</html>

Finally, display a confirmation message to the user that their password has been successfully updated. And save it in the database:

$token = $_POST['token'];
$password = $_POST['password'];
$confirm_password = $_POST['confirm_password'];

$sql = "SELECT id FROM users WHERE token = '$token'";
$result = mysqli_query($connection, $sql);

if (mysqli_num_rows($result) == 0) {
  echo "Invalid token";
} else {
  $row = mysqli_fetch_assoc($result);
  $user_id = $row['id'];
  
  if ($password != $confirm_password) {
    echo "Passwords do not match";
  } else {
    $hashed_password = password_hash($password, PASSWORD_DEFAULT);
    $sql = "UPDATE users SET password = '$hashed_password', token = NULL WHERE id = $user_id";
    mysqli_query($connection, $sql);
    echo "Your password has been successfully updated!";
  }
}

This tutorial is just a basic guide for implementing a password reminder system in PHP. We recommend following best security practices and data validation to avoid vulnerabilities in your application.





Hello, today I’m going to show you how to create a password reminder using PHP + HTML.

First, create a table in your database to store user data, including their passwords. The table could have the following fields: id, name, email, and password.

CREATE TABLE users (
  id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  name VARCHAR(30) NOT NULL,
  email VARCHAR(50) NOT NULL,
  password VARCHAR(255) NOT NULL
);

2. Create a page on your website where users can enter their email address to request password recovery.

<!DOCTYPE html>
<html>
<head>

</head>
<body>


</body>
</html>

3. When the user submits the form, PHP should verify if the provided email exists in the database. If it’s not found, display an error message to the user. Otherwise, generate a unique token and store it in the database for that user.

$email = $_POST['email'];

$sql = "SELECT id FROM users WHERE email = '$email'";
$result = mysqli_query($connection, $sql);

if (mysqli_num_rows($result) == 0) {
  echo "Email not found in database";
} else {
  $token = bin2hex(random_bytes(32));
  $user_id = mysqli_fetch_assoc($result)['id'];
  $sql = "UPDATE users SET token = '$token' WHERE id = $user_id";
  mysqli_query($connection, $sql);
  // Send email with password reset link containing the token
  // Display success message to the user
}

function generateToken() {
  // Generate a unique token
  // Return the token
}

4. Send an email to the user with a link containing the token generated in the previous step. The link should direct the user to a page where they can reset their password.

$to = $email;
$subject = "Password Reset";
$message = "To reset your password, click on the following link: https://your-website.com/reset-password.php?token=$token";
$headers = "From: Your Website <noreply@your-website.com>\r\n";
$headers .= "Reply-To: Your Website <noreply@your-website.com>\r\n";
$headers .= "Content-type: text/html\r\n";

mail($to, $subject, $message, $headers);

5. When the user clicks on the link sent via email, they are directed to the password reset page. This page should verify that the provided token is valid and associated with a user in the database.

$token = $_GET['token'];

$sql = "SELECT id FROM users WHERE token = '$token'";
$result = mysqli_query($connection, $sql);

if (mysqli_num_rows($result) == 0) {
  echo "Invalid token";
} else {
  // Token is valid, display the password reset form
}

function validateToken() {
  // Validate the token from the URL
  // Return true if valid, false otherwise
}

6. If the token is valid, display a form where the user can enter a new password.

When the user submits the form

$password = $_POST['password'];
$confirm_password = $_POST['confirm_password'];
$token = $_POST['token'];

$sql = "SELECT id FROM users WHERE token = '$token'";
$result = mysqli_query($connection, $sql);

if (mysqli_num_rows($result) == 0) {
  echo "Invalid token";
} else {
  if ($password != $confirm_password) {
    echo "Passwords do not match";
  } else {
    $hashed_password = password_hash($password, PASSWORD_DEFAULT);
    $user_id = mysqli_fetch_assoc($result)['id'];
    $sql = "UPDATE users SET password = '$hashed_password', token = NULL WHERE id = $user_id";
    mysqli_query($connection, $sql);
    echo "Your password has been successfully updated!";
  }
}

Finally, display a confirmation message to the user that their password has been successfully updated. And save it in the database:

<!DOCTYPE html>
<html>
<head>

</head>
<body>


</body>
</html>

This tutorial is just a basic guide to implement a password reminder system in PHP. We recommend following best practices for security and data validation to avoid vulnerabilities in your application.

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