What are the potential security risks associated with not using prepared statements in PHP queries, as seen in the forum thread?

Using plain SQL queries in PHP without prepared statements can leave your application vulnerable to SQL injection attacks. This is because user input is directly concatenated into the query, allowing malicious users to manipulate the query and potentially access or modify sensitive data in your database. To mitigate this risk, always use prepared statements with parameterized queries to properly sanitize and escape user input before executing the query. 

// Using prepared statements to prevent SQL injection
$pdo = new PDO("mysql:host=localhost;dbname=mydatabase", "username", "password");

$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username");
$stmt->bindParam(':username', $username);
$stmt->execute();

// Fetching results
$results = $stmt->fetchAll(PDO::FETCH_ASSOC);

Keywords

SQL injection prepared statements security vulnerabilities data sanitization parameterized queries

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