How can PHP developers ensure that their scripts are secure and follow recommended coding standards?

To ensure that PHP scripts are secure and follow recommended coding standards, developers can implement input validation, use prepared statements to prevent SQL injection attacks, sanitize user input to prevent cross-site scripting attacks, and regularly update PHP and server software to patch security vulnerabilities. 

// Example of input validation to prevent SQL injection
$username = $_POST['username'];
$password = $_POST['password'];

// Use prepared statements to prevent SQL injection
$stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username AND password = :password');
$stmt->execute(['username' => $username, 'password' => $password]);

// Sanitize user input to prevent cross-site scripting
$comment = htmlspecialchars($_POST['comment']);

// Regularly update PHP and server software
// Update PHP to the latest version
// Update server software like Apache or Nginx

Keywords

SQL injection cross-site scripting input validation password hashing secure coding practices

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