Php pagination for basic cms - php

Question

I have a problem with pagination and I have to admit I am a newbie for programming in php .
I hope,you can tell me how to do pagination for those codes.
index.php , homepage function.
function homepage() {
$results = array();
$data = Article::getList( HOMEPAGE_NUM_ARTICLES );
$results['articles'] = $data['results'];
$results['totalRows'] = $data['totalRows'];
$results['pageTitle'] = "Widget News";
require( TEMPLATE_PATH . "/homepage.php" );
}
Article.php get article function
public static function getList( $numRows=1000000, $order="publicationDate DESC" ) {
$conn = new PDO( DB_DSN, DB_USERNAME, DB_PASSWORD );
$sql = "SELECT SQL_CALC_FOUND_ROWS *, UNIX_TIMESTAMP(publicationDate) AS<br> publicationDate FROM articles
ORDER BY " .$order. " LIMIT :numRows";
$st = $conn->prepare( $sql );
$st->bindValue( ":numRows", $numRows, PDO::PARAM_INT );
$st->execute();
$list = array();
while ( $row = $st->fetch() ) {
$article = new Article( $row );
$list[] = $article;
}
index.php show article foreach
<?php foreach ($results['articles'] as $article){?>
<li>
<h2>
<span class="pubDate"><?php echo date('j F',$article->publicationDate)?></span>
<a href=".?action=viewArticle&articleId=<?php echo $article->id?>">
<?php echo htmlspecialchars($article->title)?>
</a>
</h2>
<p class="summary"><?php echo htmlspecialchars($article->summary)?></p>
</li>
<?php }?>
Thank you.

Answer 1

You need to use OFFSET in MySql string.
$page = isset($_GET['page']) ? $_GET['page'] : 1;
$itemsPerPage = 10;
$offset = ($page * $itemsPerPage) - $itemsPerPage;
$sql = "SELECT * FROM articles OFFSET {$offset} LIMIT {$itemsPerPage}";
Also remove <br> from your code. It's only valid for HTML, elsewhere it will throw error.
Final function (start) would look like this:
public static function getList($numRows = 10, $order = "publicationDate DESC") {
$conn = new PDO(DB_DSN, DB_USERNAME, DB_PASSWORD);
$page = isset($_GET['page']) ? $_GET['page'] : 1;
$order = preg_replace("/[^a-zA-Z\s]/", '', $order);
$numRows = intval($numROws);
$offset = ($page * $numRows) - $numRows;
$sql = "SELECT
SQL_CALC_FOUND_ROWS *,
UNIX_TIMESTAMP(`publicationDate`) AS 'publicationDate'
FROM `articles`
ORDER BY {$order}
LIMIT :numRows
OFFSET :offset";
$st = $conn->prepare( $sql );
$st->execute(array(':numRows' => $numRows, ':offset' => $pffset));