What are the potential pitfalls of using PHP to update database records based on HTML input fields?

One potential pitfall of using PHP to update database records based on HTML input fields is not properly sanitizing user input, which can lead to SQL injection attacks. To mitigate this risk, always use prepared statements or parameterized queries when interacting with the database to prevent malicious input from being executed as SQL commands. 

// Assuming $db is your database connection

// Get input from HTML form
$id = $_POST['id'];
$newValue = $_POST['new_value'];

// Prepare a SQL statement using prepared statements
$stmt = $db->prepare("UPDATE table SET column = ? WHERE id = ?");
$stmt->bind_param("si", $newValue, $id);
$stmt->execute();

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

Keywords

SQL injection form validation prepared statements XSS attacks data sanitization

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