What potential pitfalls should be considered when implementing a calendar feature in PHP?

One potential pitfall when implementing a calendar feature in PHP is ensuring proper validation of user input to prevent SQL injection attacks. To mitigate this risk, use prepared statements when interacting with the database to sanitize user input. 

// Example of using prepared statements to prevent SQL injection

// Assuming $db is your database connection

// User input from form
$user_input = $_POST['user_input'];

// Prepare the SQL statement
$stmt = $db->prepare("SELECT * FROM events WHERE event_date = :user_input");

// Bind the user input to the prepared statement
$stmt->bindParam(':user_input', $user_input);

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

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

Keywords

timezone date functions input validation SQL injection XSS vulnerability

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