How can reserved words in MySQL affect PHP code execution when inserting data?

Reserved words in MySQL can cause syntax errors when used in SQL queries, especially when inserting data. To prevent this issue, you can use backticks (`) around the reserved words in your SQL queries to escape them. This ensures that MySQL interprets them as column or table names rather than reserved keywords.

<?php
// Example SQL query with reserved word "order"
$data = array(
    'name' => 'John Doe',
    '`order`' => '12345'
);

$sql = "INSERT INTO `users` (`name`, `order`) VALUES (:name, :order)";

// Prepare and execute the query using PDO
$stmt = $pdo->prepare($sql);
$stmt->execute($data);
?>