How can PHP developers improve their code readability and avoid errors when using MySQL queries?

PHP developers can improve code readability and avoid errors when using MySQL queries by using prepared statements. Prepared statements help prevent SQL injection attacks and make the code more readable by separating the SQL query from the input data. This also helps in avoiding syntax errors and makes the code easier to maintain.

// Using prepared statements to improve code readability and avoid errors

// Establish a connection to the database
$pdo = new PDO("mysql:host=localhost;dbname=mydatabase", "username", "password");

// Prepare a SQL query with placeholders
$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username");

// Bind the input data to the placeholders
$stmt->bindParam(':username', $username);

// Execute the query
$stmt->execute();

// Fetch the results
$results = $stmt->fetchAll();

// Use the results as needed
foreach ($results as $row) {
    // Do something with the data
}