Pear: Introduction to:P Ager Page class _php tutorial

Pear Pager Page class is a very useful PHP paging class, extensibility is very strong, able to adapt to the needs of various paging situation, at least I have a few years of large and small projects, basically no extra code for pagination, all are used pager, This is the pager of usability. The following code looks at its use example:

Example 1
PLAIN TEXT
Php:
require_oncepager/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 a ordered+associative array with back/pages/next/first/last/all links
NB: $links [all] are the same as $pager->links;

Echo links to other pages:
Echo$links[all];

Pager can also generate Tags
echo$pager->linktags;

Show data for current page:
Echopaged DATA:;p rint_r ($data);

Results from methods:
Echogetcurrentpageid () ...:; Var_dump ($pager->getcurrentpageid ());
Echogetnextpageid () ...: Var_dump ($pager->getnextpageid ());
Echogetpreviouspageid (): Var_dump ($pager->getpreviouspageid ());
Echonumitems () ....: Var_dump ($pager->numitems ());
Echonumpages () ....: Var_dump ($pager->numpages ());
Echoisfirstpage () ...: Var_dump ($pager->isfirstpage ());
Echoislastpage () ...: Var_dump ($pager->islastpage ());
Echoislastpagecomplete ().: Var_dump ($pager->islastpagecomplete ());
Echo$pager->range.: Var_dump ($pager->range);
?>
The use of pager, as long as the parameters of the $param array can be adjusted to cope with many kinds of paging situation. The $links array in the code contains links such as previous/page/next/First/last/all.

Example 2
Today many web sites for SEO, the dynamic page using rewrite rules forged into a static page form, such as the following. htaccess configuration:

Rewriteengine on
#Options FollowSymLinks

Rewritebase/
Rewriterule ^articles/([a-z]{1,12})/art ([0-9]{1,4}). html$/article.php?num=$2&month=$1 [L]

Even in this case, pager pagination still has the means to work, see the code below

PLAIN TEXT
Php:
require_oncepager/pager.php;

First Pager
$params 1=array (
Perpage =>3,
Urlvar = pageid_articles,//1st identifier
ItemData = $someArray
);
$pager 1= & Pager::factory ($params 1);
$data 1 = $pager 1->getpagedata ();
$links 1= $pager 1->getlinks ();

Second Pager
$params 2=array (
Perpage =>8,
Urlvar = pageid_news,//2nd identifier
ItemData = $someOtherArray
);
$pager 2= & Pager::factory ($params 2);
$data 2 = $pager 2->getpagedata ();
$links 2= $pager 2->getlinks ();
?>
By configuring $param, it is possible to link "/articles/march/art15.html" to the link "/article.php?num=15&month=march" for more flexible performance

Scalability
Pager class extensibility, in all fairness, is also good. For example, the previously written page class of path mode-Pager::P athing (), this method is extended from the Pager to meet the needs of the time.

Author: Volcano published in September, 2006 at 7:16 am

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