Php 基本 cms 的分页

Question

我有分页问题，我不得不承认我是 php 中编程的新手。
我希望你能告诉我如何为这些代码做分页。

index.php,首页功能。

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获取文章功能

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 显示文章 foreach

<?php foreach ($results['articles'] as $article){?>
<li>
<h2>
<span class="pubDate"><?php echo date('j F',$article->publicationDate)?></span>
<a href=".?action=viewArticle&amp;articleId=<?php echo $article->id?>">
<?php echo htmlspecialchars($article->title)?>
</a>
</h2>
<p class="summary"><?php echo htmlspecialchars($article->summary)?></p>
</li>
<?php }?>

谢谢。

Answer 1

您需要在 MySql 字符串中使用 OFFSET。

$page = isset($_GET['page']) ? $_GET['page'] : 1;
$itemsPerPage = 10;
$offset = ($page * $itemsPerPage) - $itemsPerPage;

$sql = "SELECT * FROM articles OFFSET {$offset} LIMIT {$itemsPerPage}";

同时从您的代码中删除 <br>。只对HTML有效，其他地方会报错

最终函数（开始）如下所示：

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));

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