What are common pitfalls when inserting form data into an SQL database using PHP?

One common pitfall when inserting form data into an SQL database using PHP is not properly sanitizing the input data, which can leave the application vulnerable to SQL injection attacks. To prevent this, always use prepared statements with parameterized queries to securely insert form data into the database. 

// Assuming $conn is the database connection object

// Retrieve form data
$name = $_POST['name'];
$email = $_POST['email'];

// Prepare SQL statement with placeholders
$stmt = $conn->prepare("INSERT INTO users (name, email) VALUES (?, ?)");

// Bind parameters and execute the statement
$stmt->bind_param("ss", $name, $email);
$stmt->execute();

// Close the statement and connection
$stmt->close();
$conn->close();

Keywords

SQL injection prepared statements PDO data validation error handling

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