What potential pitfalls should PHP beginners be aware of when following tutorials, especially in terms of security vulnerabilities like SQL injections?

Beginners should be aware of the risks of SQL injections when following tutorials that do not properly sanitize user input. To prevent SQL injections, beginners should use prepared statements with parameterized queries instead of directly inserting user input into SQL queries. 

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

Keywords

SQL injections security vulnerabilities PHP tutorials beginner mistakes best practices

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