Ein Beispielcode für eine universelle PHP-Paging-Klasse-PHP-Tutorial-php.cn

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In diesem Artikel wird hauptsächlich eine universelle PHP-Paging-Klasse vorgestellt, die sehr einfach zu verwenden ist. Freunde, die die PHP-Paging-Klasse verwenden müssen, sollten sie nicht verpassen. Der Code lautet wie folgt

<?php
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
/**
 * 分页类
 * 使用方式:
 * $page = new Page();
 * $page->init(1000, 20);
 * $page->setNotActiveTemplate(&#39;<span> {a} </span>&#39;);
 * $page->setActiveTemplate(&#39;{a}&#39;);
 * echo $page->show();
 * 
 * 
 * @author 风居住的地方
 */
class Page {
  /**
   * 总条数
   */
  private $total;
  /**
   * 每页大小
   */
  private $pageSize;
  /**
   * 总页数
   */
  private $pageNum;
  /**
   * 当前页
   */
  private $page;
  /**
   * 地址
   */
  private $uri;
  /**
   * 分页变量
   */
  private $pageParam;
  /**
   * LIMIT XX,XX
   */
  private $limit;
  /**
   * 数字分页显示
   */
  private $listnum = 8;
  /**
   * 分页显示模板
   * 可用变量参数
   * {total}   总数据条数
   * {pagesize}  每页显示条数
   * {start}   本页开始条数
   * {end}    本页结束条数
   * {pagenum}  共有多少页
   * {frist}   首页
   * {pre}    上一页
   * {next}    下一页
   * {last}    尾页
   * {list}    数字分页
   * {goto}    跳转按钮
   */
  private $template = &#39;<p><span>共有{total}条数据</span><span>每页显示{pagesize}条数据</span>,<span>本页{start}-{end}条数据</span><span>共有{pagenum}页</span><ul>{frist}{pre}{list}{next}{last}{goto}</ul></p>&#39;;
  /**
   * 当前选中的分页链接模板
   */
  private $activeTemplate = &#39;<li class="active"><a href="javascript:;">{text}</a></li>&#39;;
  /**
   * 未选中的分页链接模板
   */
  private $notActiveTemplate = &#39;<li><a href="{url}">{text}</a></li>&#39;;
  /**
   * 显示文本设置
   */
  private $config = array(&#39;frist&#39; => &#39;首页&#39;, &#39;pre&#39; => &#39;上一页&#39;, &#39;next&#39; => &#39;下一页&#39;, &#39;last&#39; => &#39;尾页&#39;);
  /**
   * 初始化
   * @param type $total    总条数
   * @param type $pageSize  每页大小
   * @param type $param    url附加参数
   * @param type $pageParam  分页变量
   */
  public function init($total, $pageSize, $param = &#39;&#39;, $pageParam = &#39;page&#39;) {
    $this->total = intval($total);
    $this->pageSize = intval($pageSize);
    $this->pageParam = $pageParam;
    $this->uri = $this->geturi($param);
    $this->pageNum = ceil($this->total / $this->pageSize);
    $this->page = $this->setPage();
    $this->limit = $this->setlimit();
  }
   
  /**
   * 设置分页模板
   * @param type $template  模板配置
   */
  public function setTemplate($template) {
    $this->template = $template;
  }
   
  /**
   * 设置选中分页模板
   * @param type $activeTemplate   模板配置
   */
  public function setActiveTemplate($activeTemplate) {
    $this->activeTemplate = $activeTemplate;
  }
 
  /**
   * 设置未选中分页模板
   * @param type $notActiveTemplate  模板配置
   */
  public function setNotActiveTemplate($notActiveTemplate) {
    $this->notActiveTemplate = $notActiveTemplate;
  }
 
  /**
   * 返回分页
   * @return type
   */
  public function show() {
    return str_ireplace(array(
      &#39;{total}&#39;,
      &#39;{pagesize}&#39;,
      &#39;{start}&#39;,
      &#39;{end}&#39;,
      &#39;{pagenum}&#39;,
      &#39;{frist}&#39;,
      &#39;{pre}&#39;,
      &#39;{next}&#39;,
      &#39;{last}&#39;,
      &#39;{list}&#39;,
      &#39;{goto}&#39;,
    ), array(
      $this->total,
      $this->setPageSize(),
      $this->star(),
      $this->end(),
      $this->pageNum,
      $this->frist(),
      $this->prev(),
      $this->next(),
      $this->last(),
      $this->pagelist(),
      $this->gopage(),
    ), $this->template);
  }
   
  /**
   * 获取limit起始数
   * @return type
   */
  public function getOffset() {
    return ($this->page - 1) * $this->pageSize;
  }
   
  /**
   * 设置LIMIT
   * @return type
   */
  private function setlimit() {
    return "limit " . ($this->page - 1) * $this->pageSize . ",{$this->pageSize}";
  }
 
  /**
   * 获取limit
   * @param type $args
   * @return type
   */
  public function __get($args) {
    if ($args == "limit") {
      return $this->limit;
    } else {
      return null;
    }
  }
 
  /**
   * 初始化当前页
   * @return int
   */
  private function setPage() {
    if (!empty($_GET[$this->pageParam])) {
      if ($_GET[$this->pageParam] > 0) {
        if ($_GET[$this->pageParam] > $this->pageNum)
          return $this->pageNum;
        else
          return $_GET[$this->pageParam];
      }
    }
    return 1;
  }
 
  /**
   * 初始化url
   * @param type $param
   * @return string
   */
  private function geturi($param) {
    $url = $_SERVER[&#39;REQUEST_URI&#39;] . (strpos($_SERVER[&#39;REQUEST_URI&#39;], "?") ? "" : "?") . $param;
    $parse = parse_url($url);
    if (isset($parse["query"])) {
      parse_str($parse["query"], $params);
      unset($params["page"]);
      $url = $parse["path"] . "?" . http_build_query($params);
      return $url;
    } else {
      return $url;
    }
  }
 
  /**
   * 本页开始条数
   * @return int
   */
  private function star() {
    if ($this->total == 0) {
      return 0;
    } else {
      return ($this->page - 1) * $this->pageSize + 1;
    }
  }
 
  /**
   * 本页结束条数
   * @return type
   */
  private function end() {
    return min($this->page * $this->pageSize, $this->total);
  }
 
  /**
   * 设置当前页大小
   * @return type
   */
  private function setPageSize() {
    return $this->end() - $this->star() + 1;
  }
   
  /**
   * 首页
   * @return type
   */
  private function frist() {
    $html = &#39;&#39;;
    if ($this->page == 1) {
      $html .= $this->replace("{$this->uri}&page=1", $this->config[&#39;frist&#39;], true);
    } else {
      $html .= $this->replace("{$this->uri}&page=1", $this->config[&#39;frist&#39;], false);
    }
    return $html;
  }
 
  /**
   * 上一页
   * @return type
   */
  private function prev() {
    $html = &#39;&#39;;
    if ($this->page > 1) {
      $html .= $this->replace($this->uri.&#39;&page=&#39;.($this->page - 1), $this->config[&#39;pre&#39;], false);
    } else {
      $html .= $this->replace($this->uri.&#39;&page=&#39;.($this->page - 1), $this->config[&#39;pre&#39;], true);
    }
    return $html;
  }
 
  /**
   * 分页数字列表
   * @return type
   */
  private function pagelist() {
    $linkpage = "";
    $lastlist = floor($this->listnum / 2);
    for ($i = $lastlist; $i >= 1; $i--) {
      $page = $this->page - $i;
      if ($page >= 1) {
        $linkpage .= $this->replace("{$this->uri}&page={$page}", $page, false);
      } else {
        continue;
      }
    }
    $linkpage .= $this->replace("{$this->uri}&page={$this->page}", $this->page, true);
    for ($i = 1; $i <= $lastlist; $i++) {
      $page = $this->page + $i;
      if ($page <= $this->pageNum) {
        $linkpage .= $this->replace("{$this->uri}&page={$page}", $page, false);
      } else {
        break;
      }
    }
    return $linkpage;
  }
 
  /**
   * 下一页
   * @return type
   */
  private function next() {
    $html = &#39;&#39;;
    if ($this->page < $this->pageNum) {
      $html .= $this->replace($this->uri.&#39;&page=&#39;.($this->page + 1), $this->config[&#39;next&#39;], false);
    } else {
      $html .= $this->replace($this->uri.&#39;&page=&#39;.($this->page + 1), $this->config[&#39;next&#39;], true);
    }
    return $html;
  }
 
  /**
   * 最后一页
   * @return type
   */
  private function last() {
    $html = &#39;&#39;;
    if ($this->page == $this->pageNum) {
      $html .= $this->replace($this->uri.&#39;&page=&#39;.($this->pageNum), $this->config[&#39;last&#39;], true);
    } else {
      $html .= $this->replace($this->uri.&#39;&page=&#39;.($this->pageNum), $this->config[&#39;last&#39;], false);
    }
    return $html;
  }
 
  /**
   * 跳转按钮
   * @return string
   */
  private function gopage() {
    $html = &#39;&#39;;
    $html.=&#39; <input type="text" value="&#39; . $this->page . &#39;" onkeydown="javascript:if(event.keyCode==13){var page=(this.value>&#39; . $this->pageNum . &#39;)?&#39; . $this->pageNum . &#39;:this.value;location=\&#39;&#39; . $this->uri . &#39;&page=\&#39;+page+\&#39;\&#39;}" style="width:25px;"/><input type="button" onclick="javascript:var page=(this.previousSibling.value>&#39; . $this->pageNum . &#39;)?&#39; . $this->pageNum . &#39;:this.previousSibling.value;location=\&#39;&#39; . $this->uri . &#39;&page=\&#39;+page+\&#39;\&#39;" value="GO"/>&#39;;
    return $html;
  }
 
  /**
   * 模板替换
   * @param type $replace   替换内容
   * @param type $result   条件
   * @return type
   */
  private function replace($url, $text, $result = true) {
    $template = ($result ? $this->activeTemplate : $this->notActiveTemplate);
     
     $html = str_replace(&#39;{url}&#39;, $url, $template);
     $html = str_replace(&#39;{text}&#39;, $text, $html);
    return $html;
  }
}

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Die zweite PHP-Paging-Klasse

<?php
/*
 *本程序文件对分页程序进行了封装
 *
*/

class Page_Link
{
  var $page_max = 10; //一组页码的最大数

  var $page_num = 10; //总页数
  var $length = 20; //一页的数据条数

  var $isNextPage = true;
  var $isFirstPage = false;

  function Calculation_Page_Num( $total )
  {
    $this->page_num = ceil( $total / $this->length );
    return $this->page_num;
  }

  function Calculation_Min_Max( $act_page = 1 )
  {
    // 定义左右偏移量
    $py_left = 0;
    $py_right = 0;
    // 定义左右边界
    $bj_left = 0;
    $bj_right = 0;
    // 定义滚动区间边界
    $gd_left = 0;
    $gd_right = 0;
    // 判断是否需要分组
    if ( ( $this->page_num - $this->page_max ) <= 0 )
    {
      // 不需要分组
      $bj_left = 1;
      $bj_right = $this->page_num;
    }
    else
    {
      // 要进行分组
      // 判断容量的奇偶
      $tmp = $this->page_max % 2;
      if ( $tmp === 1 )
      {
        // 奇数
        $py_left = $py_right = ( $this->page_max - 1 ) / 2;
      }
      else
      {
        // 偶数
        $py_left = $this->page_max / 2 - 1;
        $py_right = $this->page_max / 2;
      }
      // 计算滚动区间
      $gd_left = 1 + $py_left;
      $gd_right = $this->page_num - $py_right;
      // 判断当前页是否落入了滚动区间
      if ( $act_page >= $gd_left && $act_page <= $gd_right )
      {
        // 区间内
        $bj_left = $act_page - $py_left;
        $bj_right = $act_page + $py_right;
      }
      else
      {
        // 区间外
        if ( ( $act_page - $py_left ) <= 1 )
        {
          // 左侧固定区间
          $bj_left = 1;
          $bj_right = $this->page_max;
        }
        else
        {
          $bj_left = $this->page_num - $this->page_max + 1;
          $bj_right = $this->page_num;
        }
      }
    }

    $res = array();
    $res[&#39;min&#39;] = $bj_left;
    $res[&#39;max&#39;] = $bj_right;

    return $res;
    
  }
  // 主方法
  function make_page( $total, $act_page, $url, $param )
  {
    $page_num = $this->Calculation_Page_Num( $total );
    $arr_min_max = $this->Calculation_Min_Max( $act_page );
    
    if (!eregi("([?|&]$param=)", $url)) {
      $url = strpos($url,"?")===false?$url."?":$url."&";
      $url = $url."$param=0";
    }

    if ( $act_page > $page_num )
    {
      $act_page = $page_num;
    }
    // 用正则把url改成正规的
    $url = eregi_replace( $param . &#39;=[0-9]+&#39;, $param . &#39;=0&#39;, $url );

    $res = array();
    $d = 0;
    for( $i = $arr_min_max[&#39;min&#39;];$i <= $arr_min_max[&#39;max&#39;];$i++ )
    {
      if ( $i == $act_page )
      {
        $res[$d][&#39;url&#39;] = &#39;&#39;;
        $res[$d][&#39;name&#39;] = $i;
        $res[$d][&#39;no&#39;] = $i;
      }
      else
      {
        $res[$d][&#39;url&#39;] = str_replace( $param . &#39;=0&#39;, $param . &#39;=&#39; . $i, $url );
        $res[$d][&#39;name&#39;] = $i;
        $res[$d][&#39;no&#39;] = $i;
      }
      $d++;
    }

    if ( $this->isNextPage )
    {
      $res = $this->make_before_next_link( $res, $act_page, $url, $param );
    }
    if ( $this->isFirstPage )
    {
      $res = $this->make_first_end_link( $res, $act_page, $url, $param );
    }
    return $res;
  }
  //// 带总页数
  function make_page_with_total( $total, $act_page, $url, $param )
  {
    $page_num = $this->Calculation_Page_Num( $total );
    $arr_min_max = $this->Calculation_Min_Max( $act_page );
    
    if (!eregi("([?|&]$param=)", $url)) {
      $url = strpos($url,"?")===false?$url."?":$url."&";
      $url = $url."$param=0";
    }

    if ( $act_page > $page_num )
    {
      $act_page = $page_num;
    }
    // 用正则把url改成正规的
    $url = eregi_replace( $param . &#39;=[0-9]+&#39;, $param . &#39;=0&#39;, $url );

    $res = array();
    $d = 0;
    for( $i = $arr_min_max[&#39;min&#39;];$i <= $arr_min_max[&#39;max&#39;];$i++ )
    {
      if ( $i == $act_page )
      {
        $res[$d][&#39;url&#39;] = &#39;&#39;;
        $res[$d][&#39;name&#39;] = $i;
        $res[$d][&#39;no&#39;] = $i;
      }
      else
      {
        $res[$d][&#39;url&#39;] = str_replace( $param . &#39;=0&#39;, $param . &#39;=&#39; . $i, $url );
        $res[$d][&#39;name&#39;] = $i;
        $res[$d][&#39;no&#39;] = $i;
      }
      $d++;
    }

    if ( $this->isNextPage )
    {
      $res = $this->make_before_next_link( $res, $act_page, $url, $param );
    }
    if ( $this->isFirstPage )
    {
      $res = $this->make_first_end_link( $res, $act_page, $url, $param );
    }
    
    $total_num= ceil($total/$this->length);
    $result[&#39;total&#39;]=$total_num;
    $result[&#39;DATA&#39;]=$res;
    return $result;
  }
  
  // 附加上一页和下一页
  function make_before_next_link( $arr, $act, $url, $param )
  {
    $tmp = array();

    $before = $act - 1;
    $next = $act + 1;

    if ( $before < 1 )
    {
      $before = 1;
      $tmp[0][&#39;url&#39;] = &#39;&#39;;
      $tmp[0][&#39;name&#39;] = "上一页";
      $tmp[0][&#39;no&#39;] = $before;
    }
    else
    {
      $tmp[0][&#39;url&#39;] = str_replace( $param . &#39;=0&#39;, $param . &#39;=&#39; . $before, $url );
      $tmp[0][&#39;name&#39;] = "上一页";
      $tmp[0][&#39;no&#39;] = $before;
    }

    $counts = sizeof( $arr );
    $tmp_count = sizeof( $tmp );
    for( $i = 0;$i < $counts;$i++ )
    {
      $tmp[$tmp_count][&#39;url&#39;] = $arr[$i][&#39;url&#39;];
      $tmp[$tmp_count][&#39;name&#39;] = $arr[$i][&#39;name&#39;];
      $tmp[$tmp_count][&#39;no&#39;] = $arr[$i][&#39;no&#39;];
      $tmp_count++;
    }

    if ( $next > $this->page_num )
    {
      $next = $this->page_num;
      $tmp[$tmp_count][&#39;url&#39;] = &#39;&#39;;
      $tmp[$tmp_count][&#39;name&#39;] = "下一页";
      $tmp[$tmp_count][&#39;no&#39;] = $next;
    }
    else
    {
      $tmp[$tmp_count][&#39;url&#39;] = str_replace( $param . &#39;=0&#39;, $param . &#39;=&#39; . $next, $url );
      $tmp[$tmp_count][&#39;name&#39;] = "下一页";
      $tmp[$tmp_count][&#39;no&#39;] = $next;
    }

    return $tmp;
  }
  
  // 附加首页和尾页
  function make_first_end_link( $arr, $act, $url, $param )
  {
    $tmp = array();

    $before = 1;
    $next = $this->page_num;

    if ( $act == 1 )
    {
      $before = 1;
      $tmp[0][&#39;url&#39;] = &#39;&#39;;
      $tmp[0][&#39;name&#39;] = "首页";
      $tmp[0][&#39;no&#39;] = $before;
    }
    else
    {
      $tmp[0][&#39;url&#39;] = str_replace( $param . &#39;=0&#39;, $param . &#39;=&#39; . $before, $url );
      $tmp[0][&#39;name&#39;] = "首页";
      $tmp[0][&#39;no&#39;] = $before;
    }

    $counts = sizeof( $arr );
    $tmp_count = sizeof( $tmp );
    for( $i = 0;$i < $counts;$i++ )
    {
      $tmp[$tmp_count][&#39;url&#39;] = $arr[$i][&#39;url&#39;];
      $tmp[$tmp_count][&#39;name&#39;] = $arr[$i][&#39;name&#39;];
      $tmp[$tmp_count][&#39;no&#39;] = $arr[$i][&#39;no&#39;];
      $tmp_count++;
    }

    if ( $act == $this->page_num )
    {
      $tmp[$tmp_count][&#39;url&#39;] = &#39;&#39;;
      $tmp[$tmp_count][&#39;name&#39;] = "尾页";
      $tmp[$tmp_count][&#39;no&#39;] = $next;
    }
    else
    {
      $tmp[$tmp_count][&#39;url&#39;] = str_replace( $param . &#39;=0&#39;, $param . &#39;=&#39; . $next, $url );
      $tmp[$tmp_count][&#39;name&#39;] = "尾页";
      $tmp[$tmp_count][&#39;no&#39;] = $next;
    }

    return $tmp;
  }
?>

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