How can reserved words in MySQL impact the functionality of PHP scripts that interact with a database?

Reserved words in MySQL can impact the functionality of PHP scripts that interact with a database by causing syntax errors or unexpected behavior. To solve this issue, you can use backticks (`) to escape reserved words in your SQL queries. This ensures that MySQL interprets the reserved words as column or table names rather than keywords.

// Example SQL query with reserved word "order"
$sql = "SELECT * FROM `order` WHERE status = 'pending'";
$result = mysqli_query($conn, $sql);