What are the potential pitfalls of using PHP to access external servers for content?

One potential pitfall of using PHP to access external servers for content is the risk of security vulnerabilities such as SQL injection or cross-site scripting attacks. To mitigate these risks, it is essential to sanitize and validate user input, use prepared statements when interacting with databases, and implement proper authentication and authorization mechanisms. 

// Example of using prepared statements to prevent SQL injection
$stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username');
$stmt->execute(['username' => $username]);
$user = $stmt->fetch();

Keywords

cURL API security vulnerabilities cross-site scripting data leakage

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