How can PHP developers effectively monitor and analyze server logs to detect and prevent PHP injection attacks on their websites?

PHP developers can effectively monitor and analyze server logs by implementing log monitoring tools such as Splunk or ELK stack. These tools can help identify patterns or anomalies in server logs that may indicate a PHP injection attack. Additionally, developers should regularly review server logs for any suspicious activity and implement security measures such as input validation and parameterized queries to prevent PHP injection attacks.

// Example code to prevent PHP injection attacks using parameterized queries

// Establish a database connection
$pdo = new PDO('mysql:host=localhost;dbname=example_db', 'username', 'password');

// Prepare a SQL statement with parameters
$stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username');

// Bind parameters to the statement
$stmt->bindParam(':username', $_POST['username']);

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

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