What potential issue is the user facing with the current script?

The potential issue the user is facing with the current script is that the code is vulnerable to SQL injection attacks because it is directly inserting user input into the SQL query without sanitizing it. To solve this issue, the user should use prepared statements with parameterized queries to securely handle user input. 

// Original code vulnerable to SQL injection
$username = $_POST['username'];
$password = $_POST['password'];

$sql = "SELECT * FROM users WHERE username = '$username' AND password = '$password'";
$result = mysqli_query($conn, $sql);

// Fixed code using prepared statements
$username = $_POST['username'];
$password = $_POST['password'];

$stmt = $conn->prepare("SELECT * FROM users WHERE username = ? AND password = ?");
$stmt->bind_param("ss", $username, $password);
$stmt->execute();
$result = $stmt->get_result();

Keywords

syntax error undefined variable missing semicolon PHP error reporting debugging techniques

Related Questions