What are some potential security risks when using PHP scripts to control functions on a web server?

One potential security risk when using PHP scripts to control functions on a web server is the possibility of SQL injection attacks if user input is not properly sanitized. To mitigate this risk, it is important to use prepared statements and parameterized queries when interacting with a database. 

// Example of using prepared statements to prevent SQL injection

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

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

// Bind the parameter values
$stmt->bindParam(':username', $_POST['username']);

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

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

Keywords

SQL injection cross-site scripting file inclusion remote code execution session hijacking

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