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在页面上显示大量数据，是WEB项目中很常见的一个作法，但限于屏幕的大小，为了便于用户阅读，我们通常需要将数据分页显示，所以分页功能是大部份项目不可缺少的。PEAR::Pager是一个功能强大的分页类，使用非常方便。
系统需求：PHP4.3.* /PHP5，PEAR::Pager
PEAR::Pager有两种分页显示模式，一是Jumping，二是Sliding。两者有什么区别，我们来看两个例子：
Jumping.php
require_once "Pager/Pager.php";
$params = array(
"mode" => "Jumping",
"perPage" => 3,
"delta" => 5,
"itemData" => array("a","b","c","d","e","z","ty","xc","fg","fg","jk","hj","ty","xc","e","z","ty","xc","fg","fg","jk","hj","ty","xc")
);
echo "
当前分页模式：".$params["mode"];
echo "
每页显示数据条数：".$params["perPage"];
echo "
显示页数：".$params["delta"];
echo "
具体数据数组：";
print_r($params["itemData"]);
$pager = & Pager::factory($params);
$data = $pager->getPageData();
$links = $pager->getLinks();
echo "
最后效果：";
echo $links["all"];
echo $pager->linkTags;
echo "
当前页的数据: " ;
echo "
";";
print_r($data);
echo "
echo "其它类方法得到的数据：
";
echo "getCurrentPageID()...: ";
var_dump($pager->getCurrentPageID());
echo "
";
echo "getNextPageID()......: ";
var_dump($pager->getNextPageID());
echo "
";
echo "getPreviousPageID()..: ";
var_dump($pager->getPreviousPageID());
echo "
";
echo "numItems()...........: ";
var_dump($pager->numItems());
echo "
";
echo "numPages()...........: ";
var_dump($pager->numPages());
echo "
";
echo "isFirstPage()........: ";
var_dump($pager->isFirstPage());
echo "
";
echo "isLastPage().........: ";
var_dump($pager->isLastPage());
echo "
";
echo "isLastPageComplete().: ";