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Pear::Pager分页类简介

2008-12-23 08:13:01  编辑来源:互联网  宽屏版  评论
 

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

 
 
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 - [url=http://www.ooso.net/index.php/archives/250]http://www.ooso.net/index.php/archives/250[/url]
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