Are there best practices or coding techniques that PHP developers can implement to prevent code injection attacks in their applications?

Code injection attacks can be prevented by using prepared statements with parameterized queries when interacting with databases. This helps to sanitize user input and prevent malicious code from being executed. Additionally, input validation should be implemented to ensure that only expected data is accepted. 

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

Keywords

SQL injection cross-site scripting prepared statements input validation htmlspecialchars

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