What are the potential security risks of not using prepared statements in PHP when dealing with user inputs?

When not using prepared statements in PHP when dealing with user inputs, the code is vulnerable to SQL injection attacks. This means that malicious users can manipulate the input data to execute unauthorized SQL queries on the database, potentially exposing sensitive information or causing data loss. To prevent this, it is crucial to use prepared statements, which separate the SQL query from the user input, thus preventing any malicious SQL code from being executed. 

// Using prepared statements to prevent SQL injection
$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username");
$stmt->bindParam(':username', $username);
$stmt->execute();

Keywords

SQL injection prepared statements user inputs security risks PHP.

Related Questions