What potential security risks are associated with not properly escaping user input in PHP scripts, especially in login forms?

Not properly escaping user input in PHP scripts, especially in login forms, can lead to security risks such as SQL injection attacks or cross-site scripting (XSS) attacks. To mitigate these risks, it is important to sanitize and escape user input before using it in SQL queries or displaying it on the webpage. 

$username = htmlspecialchars($_POST['username']);
$password = htmlspecialchars($_POST['password']);

// Use the sanitized input in your code
// For example, in a SQL query:
$query = "SELECT * FROM users WHERE username = '$username' AND password = '$password'";

Keywords

SQL injection Cross-site scripting (XSS) Input validation htmlspecialchars Prepared statements

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