How can SQL injection vulnerabilities be mitigated when using PHP for database interactions?

SQL injection vulnerabilities can be mitigated in PHP by using prepared statements with parameterized queries instead of directly inserting user input into SQL queries. This helps prevent malicious SQL code from being injected into the query and executed on the database. 

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

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

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

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

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

Keywords

SQL injection PHP prepared statements PDO parameterized queries

Related Questions