Pear的Pager分页类是一个很好用的php分页类,扩展性很强,能够适应各种分页情况的需求,至少我在几年间大大小小的项目里,基本上没有为分页额外写过代码,全部都是用的Pager,足见Pager的可用性之强.下面用代码来看看它的使用范例:
例子1 PLAIN TEXT PHP: <?php require_once''Pager/Pager.php''; $params=array( ''mode'' =>''Jumping'', ''perPage'' =>3, ''delta'' =>2, ''itemData'' =>array(''a'',''b'',''c'',''d'',''e'',[...omissis...],''z'') ); $pager= & Pager::factory($params); $data =$pager->getPageData(); $links=$pager->getLinks(); //$links is an ordered+associative array with ''back''/''pages''/''next''/''first''/''last''/''all'' links //NB: $links[''all''] is the same as $pager->links; //echo links to other pages: echo$links[''all'']; //Pager can also generate <link rel="first|prev|next|last"> tags echo$pager->linkTags; //Show data for current page: echo''PAGED DATA: '';print_r($data); //Results from methods: echo''getCurrentPageID()...: '';var_dump($pager->getCurrentPageID()); echo''getNextPageID()......: '';var_dump($pager->getNextPageID()); echo''getPreviousPageID()..: '';var_dump($pager->getPreviousPageID()); echo''numItems()...........: '';var_dump($pager->numItems()); echo''numPages()...........: '';var_dump($pager->numPages()); echo''isFirstPage()........: '';var_dump($pager->isFirstPage()); echo''isLastPage().........: '';var_dump($pager->isLastPage()); echo''isLastPageComplete().: '';var_dump($pager->isLastPageComplete()); echo''$pager->range........: '';var_dump($pager->range); ?> Pager的使用,只要调整$param数组的参数,就可以应付很多种分页情况了.代码中的$links数组包含了一些链接,如上一页/页码/下一页/第一页/末页/全部.
例2 如今许多网站为了SEO,把动态页使用rewrite规则伪造成静态页的形式,例如下面这个.htaccess配置:
RewriteEngine on #Options FollowSymlinks
RewriteBase / RewriteRule ^articles/([a-z]{1,12})/art([0-9]{1,4})\.html$ /article.php?num=$2&month=$1 [L]
即使在这种情况下,Pager分页仍然有办法工作,见下面的code
PLAIN TEXT PHP: <?php require_once''Pager/Pager.php''; //first pager $params1=array( ''perPage'' =>3, ''urlVar'' => pageID_articles, //1st identifier ''itemData'' =>$someArray ); $pager1= & Pager::factory($params1); $data1 =$pager1->getPageData(); $links1=$pager1->getLinks(); //second pager $params2=array( ''perPage'' =>8, ''urlVar'' => pageID_news, //2nd identifier ''itemData'' =>$someOtherArray ); $pager2= & Pager::factory($params2); $data2 =$pager2->getPageData(); $links2=$pager2->getLinks(); ?> 通过配置$param,就能够把链接 "/articles/march/art15.html"对应到链接"/article.php?num=15&month=march" ,比较灵活的表现
扩展性 Pager类的扩展性,平心而论,也是不错的.比如以前写的path方式的分页类 - Pager::Pathing(),这个方法就是从Pager上扩展而来,满足了当时的需求.
作者:volcano发表于9月 22, 2006 at 7:16 am
版权信息:可以任意转载, 转载时请务必以超链接形式标明文章原始出处和作者信息及此声明
永久链接 - http://www.ooso.net/index.php/archives/250 |