How can developers ensure the security and integrity of their PHP queries when inserting data into databases?

Developers can ensure the security and integrity of their PHP queries when inserting data into databases by using prepared statements with parameterized queries. This helps prevent SQL injection attacks and ensures that the data being inserted is properly sanitized. 

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

// Prepare a SQL query with placeholders
$stmt = $pdo->prepare("INSERT INTO users (username, email) VALUES (:username, :email)");

// Bind parameters to placeholders
$stmt->bindParam(':username', $username);
$stmt->bindParam(':email', $email);

// Set values for parameters
$username = 'john_doe';
$email = 'john.doe@example.com';

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

Keywords

SQL injection prepared statements PDO parameterized queries data validation

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