How can SQL injection vulnerabilities be prevented when using PHP with PDO?

SQL injection vulnerabilities can be prevented when using PHP with PDO by using prepared statements with parameterized queries. This approach ensures that user input is treated as data rather than executable SQL code, thus preventing malicious SQL injection attacks. 

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

// Prepare a SQL statement with parameters
$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 vulnerabilities prevention PHP PDO

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