What are the potential security risks associated with using a login script without MySQL for password change functionality in PHP?

Using a login script without MySQL for password change functionality in PHP can pose security risks such as exposing user passwords in plain text in the code, lack of proper encryption for password storage, and vulnerability to SQL injection attacks. To mitigate these risks, it is recommended to use a secure and reliable database like MySQL to store and manage user passwords. 

// Example of implementing password change functionality with MySQL

// Connect to MySQL database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Get user input for new password
$new_password = $_POST['new_password'];

// Encrypt the new password before storing it in the database
$encrypted_password = password_hash($new_password, PASSWORD_DEFAULT);

// Update user's password in the database
$user_id = $_SESSION['user_id'];
$sql = "UPDATE users SET password='$encrypted_password' WHERE id='$user_id'";

if ($conn->query($sql) === TRUE) {
    echo "Password updated successfully";
} else {
    echo "Error updating password: " . $conn->error;
}

$conn->close();

Keywords

PHP login script MySQL security risks password change functionality

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