In the context of PHP login scripts, why is it important to avoid using LIKE for matching usernames and passwords, and what security risks does this pose for the authentication process?

Using the LIKE operator for matching usernames and passwords in PHP login scripts can pose security risks as it can make the authentication process vulnerable to SQL injection attacks. It is important to avoid using LIKE and instead use prepared statements with parameterized queries to securely match usernames and passwords. 

// Using prepared statements with parameterized queries to securely match usernames and passwords
$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username AND password = :password");
$stmt->bindParam(':username', $username);
$stmt->bindParam(':password', $password);
$stmt->execute();

Keywords

PHP login scripts LIKE security risks authentication process

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