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Pagination with PHP and MySQL
Paginating large datasets is a common task when designing responsive web applications. This article will demonstrate a method for implementing pagination with PHP and MySQL, allowing you to display a limited number of results per page.
Specifically, we aim to paginate the results of a hypothetical MySQL query that retrieves records from a table called 'redirect' based on a 'user_id' passed through a PHP session.
Code Implementation
To implement pagination, we can leverage the following PHP script:
<code class="php"><?php // MySQL connection code (not shown for brevity) // Set pagination parameters $perPage = 10; $page = (isset($_GET['page'])) ? (int)$_GET['page'] : 1; $startAt = $perPage * ($page - 1); // Get total number of records $query = "SELECT COUNT(*) as total FROM redirect WHERE user_id = '".$_SESSION['user_id']."'"; $r = mysql_fetch_assoc(mysql_query($query)); // Calculate total pages $totalPages = ceil($r['total'] / $perPage); // Generate pagination links $links = ""; for ($i = 1; $i <= $totalPages; $i++) { $links .= ($i != $page ) ? "<a href='index.php?page=$i'>Page $i</a> " : "$page "; } // Execute paginated query $query = "SELECT * FROM 'redirect' WHERE 'user_id'= \''.$_SESSION['user_id'].' \' ORDER BY 'timestamp' LIMIT $startAt, $perPage"; $r = mysql_query($query); // Display results and pagination links // ... echo $links; // display pagination links ?></code>
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