Question

按照本指南，如何使用PHP对MySQL的结果进行分页：

https://code.tutsplus.com/tutorials/how-to-paginate-data-with-php--net-2928

为paginator类文件结束：

<?php

class Paginator {

     private $_conn;
        private $_limit;
        private $_page;
        private $_query;
        private $_total;

public function __construct( $conn, $query ) {

    $this->_conn = $conn;
    $this->_query = $query;

    $rs= $this->_conn->query( $this->_query );
    $this->_total = $rs->num_rows;

}

public function getData( $limit = 10, $page = 1 ) {

    $this->_limit   = $limit;
    $this->_page    = $page;

    if ( $this->_limit == 'all' ) {
        $query      = $this->_query;
    } else {
        $query      = $this->_query . " LIMIT " . ( ( $this->_page - 1 ) * $this->_limit ) . ", $this->_limit";
    }
    $rs             = $this->_conn->query( $query );

    while ( $row = $rs->fetch_assoc() ) {
        $results[]  = $row;
    }

    $result         = new stdClass();
    $result->page   = $this->_page;
    $result->limit  = $this->_limit;
    $result->total  = $this->_total;
    $result->data   = $results;

    return $result;
}

public function createLinks( $links, $list_class ) {
    if ( $this->_limit == 'all' ) {
        return '';
    }

    $last       = ceil( $this->_total / $this->_limit );

    $start      = ( ( $this->_page - $links ) > 0 ) ? $this->_page - $links : 1;
    $end        = ( ( $this->_page + $links ) < $last ) ? $this->_page + $links : $last;

    $html       = '<ul class="' . $list_class . '">';

    $class      = ( $this->_page == 1 ) ? "disabled" : "";
    $html       .= '<li class="' . $class . '"><a href="?limit=' . $this->_limit . '&page=' . ( $this->_page - 1 ) . '">&laquo;</a></li>';

    if ( $start > 1 ) {
        $html   .= '<li><a href="?limit=' . $this->_limit . '&page=1">1</a></li>';
        $html   .= '<li class="disabled"><span>...</span></li>';
    }

    for ( $i = $start ; $i <= $end; $i++ ) {
        $class  = ( $this->_page == $i ) ? "active" : "";
        $html   .= '<li class="' . $class . '"><a href="?limit=' . $this->_limit . '&page=' . $i . '">' . $i . '</a></li>';
    }

    if ( $end < $last ) {
        $html   .= '<li class="disabled"><span>...</span></li>';
        $html   .= '<li><a href="?limit=' . $this->_limit . '&page=' . $last . '">' . $last . '</a></li>';
    }

    $class      = ( $this->_page == $last ) ? "disabled" : "";
    $html       .= '<li class="' . $class . '"><a href="?limit=' . $this->_limit . '&page=' . ( $this->_page + 1 ) . '">&raquo;</a></li>';

    $html       .= '</ul>';

    return $html;
  }
}
?>

它正在对结果进行分页，但我最终得到第1页的1个结果，第2页的2个结果，第3页的3个结果......等等。

任何人都可以帮我理解我在这里缺少的东西吗？

我的index.php文件：

<?php
  require_once 'Paginator.class.php';

  $conn       = new mysqli( 'localhost', 'uname', 'password', 'dbname' );

  $limit      = ( isset( $_GET['limit'] ) ) ? $_GET['limit'] : 25;
  $page       = ( isset( $_GET['page'] ) ) ? $_GET['page'] : 1;
  $links      = ( isset( $_GET['links'] ) ) ? $_GET['links'] : 7;
  $query      = "SELECT Host, CVE, Name, Risk, CVSS FROM Vulnerabilities";

  $Paginator  = new Paginator( $conn, $query );

  $results    = $Paginator->getData( $page, $limit );
?>

<!DOCTYPE html>
    <head>
        <title>Vulnerability Pagination</title>
        <link rel="stylesheet" href="css/bootstrap.min.css">
    </head>
    <body> 
        <div class="container">
                <div class="col-md-10 col-md-offset-1">
                <h1>Vulnerability Pagination</h1>
                    <?php echo $Paginator->createLinks( $links, 'pagination pagination-sm' ); ?>
                <table class="table table-striped table-condensed table-bordered table-rounded">
                        <thead>
                                <tr>
                                <th width="15%">Host</th>
                                <th width="15%">CVE</th>
                                <th width="50%">Name</th>
                                <th width="10%">Risk</th>
                                <th width="10%">CVSS</th>
                        </tr>
                        </thead>
                        <tbody>
                            <?php for( $i = 0; $i < count( $results->data ); $i++ ) : ?>
                              <tr>
                              <td><?php echo $results->data[$i]['Host']; ?></td>
                              <td><?php echo $results->data[$i]['CVE']; ?></td>
                              <td><?php echo $results->data[$i]['Name']; ?></td>
                              <td><?php echo $results->data[$i]['Risk']; ?></td>
                              <td><?php echo $results->data[$i]['CVSS']; ?></td>
                              </tr>
                            <?php endfor; ?>
                        </tbody>
                </table>
                  <?php echo $Paginator->createLinks( $links, 'pagination pagination-sm' ); ?>
                </div>  
        </div> 
        </body>
</html>

对我来说，它似乎是在迭代页码和每页的结果数量，但我无法确定原因..非常感谢任何帮助。

PHP分页问题

0 个答案: