Are there any best practices for efficiently displaying database results in PHP?

When displaying database results in PHP, it is important to use efficient methods to ensure optimal performance. One best practice is to limit the number of database queries by fetching all the necessary data in a single query using JOINs or subqueries. Additionally, consider using pagination to display a limited number of results per page to avoid overwhelming the user with too much data at once. 

// Example code snippet for efficiently displaying database results in PHP using JOINs and pagination

// Perform a single query to fetch data using JOINs
$query = "SELECT users.id, users.name, orders.order_date FROM users
          LEFT JOIN orders ON users.id = orders.user_id
          WHERE users.id = :user_id";
$stmt = $pdo->prepare($query);
$stmt->bindParam(':user_id', $user_id);
$stmt->execute();
$results = $stmt->fetchAll();

// Display results with pagination
$items_per_page = 10;
$total_results = count($results);
$total_pages = ceil($total_results / $items_per_page);

$page = isset($_GET['page']) ? $_GET['page'] : 1;
$start = ($page - 1) * $items_per_page;
$paginated_results = array_slice($results, $start, $items_per_page);

foreach ($paginated_results as $result) {
    echo "User ID: " . $result['id'] . " | Name: " . $result['name'] . " | Order Date: " . $result['order_date'] . "<br>";
}

// Display pagination links
for ($i = 1; $i <= $total_pages; $i++) {
    echo "<a href='?page=$i'>$i</a> ";
}

Keywords

SQL queries data manipulation pagination caching performance tuning

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