What potential pitfalls can occur when using PHP to update database records based on form input?

One potential pitfall when using PHP to update database records based on form input is not properly sanitizing the input data, which can lead to SQL injection attacks. To prevent this, always use prepared statements or parameterized queries to securely interact with the database. 

// Assuming $conn is the database connection object

// Sanitize form input data
$updatedValue = mysqli_real_escape_string($conn, $_POST['inputValue']);

// Prepare update query using prepared statement
$stmt = $conn->prepare("UPDATE table_name SET column_name = ? WHERE id = ?");
$stmt->bind_param("si", $updatedValue, $_POST['id']);
$stmt->execute();
$stmt->close();

Keywords

SQL injection data validation prepared statements error handling form submission.

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