What are some common security considerations when accessing and processing data from external servers in PHP?

One common security consideration when accessing and processing data from external servers in PHP is to validate and sanitize the input data to prevent SQL injection attacks. This can be done by using prepared statements and parameterized queries to ensure that user input is properly escaped before being executed. 

// Example of using prepared statements to prevent SQL injection
$stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username');
$stmt->bindParam(':username', $username);
$stmt->execute();
$results = $stmt->fetchAll();

Keywords

SQL injection Cross-site scripting (XSS) Data validation HTTPS CSRF protection

Related Questions