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javascript - PHP中使用ajax滚动到窗口底部的分页

转载 作者：行者123 更新时间：2023-11-30 00:25:23 25 4
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我从一个链接中获得了一些在线代码，其中数组上的分页是通过大量记录完成的。示例.php

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
  <meta http-equiv="content-type" content="text/html; charset=windows-1250">
  <title>PHP Array Pagination</title>
  <style>
  <!--
   body {
    font-family: Tahoma, Verdana, Arial, Sans-serif;
    font-size: 11px;
   }
   hr {
    border: 1px #ccc;
    border-style: none none solid none;
    margin: 20px 0;
   }
   a {
    color: #333;
    text-decoration: none;
   }
   a:hover {
    text-decoration: underline;
   }
   a.selected {
    font-weight: bold;
    text-decoration: underline;
   }
   .numbers {
    line-height: 20px;
    word-spacing: 4px;
   }
  //-->
  </style>
  </head>
  <body>
    <h1>PHP Array Pagination</h1>
    <hr  />
      <?php

        ini_set('display_errors','On');
        error_reporting(E_ALL);

        // Include the pagination class
        include 'pagination.class.php';

        // some example data
        foreach (range(1, 200) as $value) {
          $products[] = array(
            'Product' => 'Product '.$value,
            'Price' => rand(100, 1000),
          );
        }

        // If we have an array with items
        if (count($products)) {
          // Create the pagination object
          $pagination = new pagination($products, (isset($_GET['page']) ? $_GET['page'] : 1), 15);
          // Decide if the first and last links should show
          $pagination->setShowFirstAndLast(false);
          // You can overwrite the default seperator
          $pagination->setMainSeperator(' | ');
          // Parse through the pagination class
          $productPages = $pagination->getResults();
          // If we have items 
          if (count($productPages) != 0) {
            // Create the page numbers
            echo $pageNumbers = '<div class="numbers">'.$pagination->getLinks($_GET).'</div>';
            // Loop through all the items in the array
            foreach ($productPages as $productArray) {
              // Show the information about the item
              echo '<p><b>'.$productArray['Product'].'</b> &nbsp; &pound;'.$productArray['Price'].'</p>';
            }
            // print out the page numbers beneath the results
            echo $pageNumbers;
          }
        }
      ?>
      <hr />
      <p><a href="http://www.lotsofcode.com/php/projects/php-array-pagination" target="_blank">PHP Array Pagination</a> provided by <a href="http://www.lotsofcode.com/" target="_blank">Lots of Code</a></p>
  </body>
</html>

分页.class.php

<?php

  /************************************************************\
  *
  *   PHP Array Pagination Copyright 2007 - Derek Harvey
  *   www.lotsofcode.com
  *
  *   This file is part of PHP Array Pagination .
  *
  *   PHP Array Pagination is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
  *   the Free Software Foundation; either version 2 of the License, or
  *   (at your option) any later version.
  *
  *   PHP Array Pagination is distributed in the hope that it will be useful,
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *   GNU General Public License for more details.
  *
  *   You should have received a copy of the GNU General Public License
  *   along with PHP Array Pagination ; if not, write to the Free Software
  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
  \************************************************************/

  class pagination
  {

    /**
     * Properties array
     * @var array   
     * @access private 
     */
    private $_properties = array();

    /**
     * Default configurations
     * @var array  
     * @access public 
     */
    public $_defaults = array(
      'page' => 1,
      'perPage' => 10 
    );

    /**
     * Constructor
     * 
     * @param array $array   Array of results to be paginated
     * @param int   $curPage The current page integer that should used
     * @param int   $perPage The amount of items that should be show per page
     * @return void    
     * @access public  
     */
    public function __construct($array, $curPage = null, $perPage = null)
    {
      $this->array   = $array;
      $this->curPage = ($curPage == null ? $this->defaults['page']    : $curPage);
      $this->perPage = ($perPage == null ? $this->defaults['perPage'] : $perPage);
    }

    /**
     * Global setter
     * 
     * Utilises the properties array
     * 
     * @param string $name  The name of the property to set
     * @param string $value The value that the property is assigned
     * @return void    
     * @access public  
     */
    public function __set($name, $value) 
    { 
      $this->_properties[$name] = $value;
    } 

    /**
     * Global getter
     * 
     * Takes a param from the properties array if it exists
     * 
     * @param string $name The name of the property to get
     * @return mixed Either the property from the internal
     * properties array or false if isn't set
     * @access public  
     */
    public function __get($name)
    {
      if (array_key_exists($name, $this->_properties)) {
        return $this->_properties[$name];
      }
      return false;
    }

    /**
     * Set the show first and last configuration
     * 
     * This will enable the "<< first" and "last >>" style
     * links
     * 
     * @param boolean $showFirstAndLast True to show, false to hide.
     * @return void    
     * @access public  
     */
    public function setShowFirstAndLast($showFirstAndLast)
    {
        $this->_showFirstAndLast = $showFirstAndLast;
    }

    /**
     * Set the main seperator character
     * 
     * By default this will implode an empty string
     * 
     * @param string $mainSeperator The seperator between the page numbers
     * @return void    
     * @access public  
     */
    public function setMainSeperator($mainSeperator)
    {
      $this->mainSeperator = $mainSeperator;
    }

    /**
     * Get the result portion from the provided array 
     * 
     * @return array Reduced array with correct calculated offset 
     * @access public 
     */
    public function getResults()
    {
      // Assign the page variable
      if (empty($this->curPage) !== false) {
        $this->page = $this->curPage; // using the get method
      } else {
        $this->page = 1; // if we don't have a page number then assume we are on the first page
      }

      // Take the length of the array
      $this->length = count($this->array);

      // Get the number of pages
      $this->pages = ceil($this->length / $this->perPage);

      // Calculate the starting point 
      $this->start = ceil(($this->page - 1) * $this->perPage);

      // return the portion of results
      return array_slice($this->array, $this->start, $this->perPage);
    }

    /**
     * Get the html links for the generated page offset
     * 
     * @param array $params A list of parameters (probably get/post) to
     * pass around with each request
     * @return mixed  Return description (if any) ...
     * @access public 
     */
    public function getLinks($params = array())
    {
      // Initiate the links array
      $plinks = array();
      $links = array();
      $slinks = array();

      // Concatenate the get variables to add to the page numbering string
      $queryUrl = '';
      if (!empty($params) === true) {
        unset($params['page']);
        $queryUrl = '&amp;'.http_build_query($params);
      }

      // If we have more then one pages
      if (($this->pages) > 1) {
        // Assign the 'previous page' link into the array if we are not on the first page
        if ($this->page != 1) {
          if ($this->_showFirstAndLast) {
            $plinks[] = ' <a href="?page=1'.$queryUrl.'">&laquo;&laquo; First </a> ';
          }
          $plinks[] = ' <a href="?page='.($this->page - 1).$queryUrl.'">&laquo; Prev</a> ';
        }

        // Assign all the page numbers & links to the array
        for ($j = 1; $j < ($this->pages + 1); $j++) {
          if ($this->page == $j) {
            $links[] = ' <a class="selected">'.$j.'</a> '; // If we are on the same page as the current item
          } else {
            $links[] = ' <a href="?page='.$j.$queryUrl.'">'.$j.'</a> '; // add the link to the array
          }
        }

        // Assign the 'next page' if we are not on the last page
        if ($this->page < $this->pages) {
          $slinks[] = ' <a href="?page='.($this->page + 1).$queryUrl.'"> Next &raquo; </a> ';
          if ($this->_showFirstAndLast) {
            $slinks[] = ' <a href="?page='.($this->pages).$queryUrl.'"> Last &raquo;&raquo; </a> ';
          }
        }

        // Push the array into a string using any some glue
        return implode(' ', $plinks).implode($this->mainSeperator, $links).implode(' ', $slinks);
      }
      return;
    }
  }

example.php 文件中的数组中有很多记录，即从 1-200。example.php 中包含一个文件，即 pagination.class.php，其中提供了分页逻辑。我需要在滚动到窗口底部时完成分页。就像当您向下滚动到底部时一样，下一页记录应该通过 ajax 调用显示。

就像在这段代码中一样。将给出页数链接。单击它们时，将显示下一页记录。当我们使用ajax滚动到底部时，我需要类似的东西。

请指导我如何执行此操作...

最佳答案

每次您处于底部位置时，您都可以进行 ajax 调用来加载更多数据，例如

if (($(window).innerHeight() + $(window).scrollTop()) >= $("body").height()) {
//make ajax calls to load you data 
}

关于javascript - PHP中使用ajax滚动到窗口底部的分页，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22931983/

25 4 0
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