How can PHP developers avoid common errors when inserting data into a database based on user input?

PHP developers can avoid common errors when inserting data into a database based on user input by using prepared statements with parameterized queries. This helps prevent SQL injection attacks and ensures that the user input is properly sanitized before being inserted into 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("INSERT INTO users (username, email) VALUES (:username, :email)");

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

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

Keywords

SQL injection prepared statements PDO data validation error handling

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