Are there specific syntax rules or conventions that developers should follow when writing PHP code for database operations?

When writing PHP code for database operations, developers should follow specific syntax rules and conventions to ensure their code is readable, maintainable, and secure. Some best practices include using prepared statements to prevent SQL injection attacks, properly sanitizing input data, and closing database connections after use. Additionally, developers should follow naming conventions for variables and functions to make their code more understandable to others.

// Example of using prepared statements for database operations in PHP
$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username");
$stmt->bindParam(':username', $username);
$stmt->execute();
$result = $stmt->fetch(PDO::FETCH_ASSOC);