Database Security, Prepared Statements & SQL Injection Prevention

Guidelines for developers modifying and expanding database queries inside ScriptNest projects.

Golden Rule: Always Use PDO Prepared Statements

Never concatenate raw user variables into SQL query strings. Always use parameter placeholders:

// Safe PDO Prepared Statement
$stmt = $pdo->prepare("SELECT * FROM users WHERE email = ? AND status = 'active'");
$stmt->execute([$email]);
$user = $stmt->fetch();

This ensures complete immunity against SQL injection attacks regardless of user input format.