Pagination without using database ??

CΛSTΞX · 02-02-2008, 10:37 PM

I have content-manager which doesnt use database. The contents are being written in a file, and read from the file. Is there anyway to paginate the content ?

the php file:

PHP Code:


			
<?



        require('config.php'); 



    $filename = "article_summary.html";



    #- open article summaries

    if(file_exists($filename)){

        $fh = fopen($filename, "r");

        $old_news = fread($fh, filesize($filename));

        fclose($fh);

    }



 

    #- get first five article

    $articles = explode("<!--ARTICLE-->", $old_news);



    $i=0;

    foreach ( $articles as $article ){

        if(count($articles)>$i){

            if($max_latest >= $i++){

                print $article;

            }

        }

    }



?>

You can see, it uses explode to 

In the file the  is between contents.

Example:

In file,

content123 blabla



content456hahaha



content789hehehe

Salathe · 02-03-2008, 01:32 AM

Of course you can paginate your article content. The whole article is just, put simply, a list of blocks of content... just like you can get a list of blocks of content from a database. The pagination system shouldn't really care where the blocks come from at all.

CΛSTΞX · 02-03-2008, 07:06 AM

But how can I do it, can you please explain ? I have no idea how to do that....

xenon · 02-03-2008, 08:52 AM

Explode the text by the separators, and then if there's a GET['page'] (or something like that) set, then output the appropriate element in the array. Something like so:

PHP Code:


			
$parts = explode( '<!--ARTICLE-->', $text );

$page = isset( $_GET['page'] ) ? intval( $_GET['page'] ) : 0;

echo $parts[$page];

Of course, you might want to enforce some more checks there (like check if the requested page is greater than 0 or 1, depending on how you want the pages to appear, check if the requested page is not greater than the dimension of the array - 1, and so on).

Tanax · 02-03-2008, 10:30 AM

Also you can count the $parts array, and see how many articles you get.
Then you decide how many articles per page you want, and you use some calculations, and voilà! Pagination system :)

CΛSTΞX · 02-03-2008, 11:18 AM

Thanks.

What I want to do is,

count articles, if articles are more than 5, create page number and then echo the other articles in the other page.
But I cant do it in php language :S

Tanax · 02-03-2008, 11:54 AM

I've written a pagination class here:

pagination.php

PHP Code:


			
<?php



/**

||||||||||||||||||||||||||||||||||||||||||

|||| @author Tanax

|||| @copyright 2008

||||||||||||||||||||||||||||||||||||||||||

**/



    class pagination {

        

        // The total value.

        private $totalPages;

        private $totalResults;

        private $totalPerPage;

        

        // The current value.

        private $currentPage;

        private $currentSpan;

        

        private $firstResult;

        

        public function setMax($max) {

            

            if(is_numeric($max)) {

                

                $this->totalPerPage = $max;

                

            }

            

        }

        

        public function setPage($page) {

            

            if(is_numeric($page)) {

                

                $this->currentPage = mysql_real_escape_string($page);

                $this->firstResult = (($this->currentPage * $this->totalPerPage) - $this->totalPerPage);

                

                return $this->firstResult;

                

            }

            

        }

        

        public function getPages($results) {

            

            $this->totalResults = count($results);

            $totalPages = $this->totalResults / $this->totalPerPage;

            $this->totalPages = ceil($totalPages);

            

            $x = 1;

            $array = array();

            

            while($x <= $this->totalPages) {

                

                $array[] = $x;

                $x++;

                

            }

            

            return $array;

            

        }

        

        public function checkLink($pagenr) {

            

            if($pagenr <= $this->totalPages && $pagenr >= 1) {

                

                return true;

                

            }

            

            return false;

            

        }

        

        public function getCurrentPage() {

            

            $array = array();

            $array[] = $this->currentPage;

            $array[] = $this->totalPages;

            

            return $array;

            

        }

        

    }



?>

example.php

PHP Code:


			
<?php



/**

||||||||||||||||||||||||||||||||||||||||||

|||| @author Tanax

|||| @copyright 2008

||||||||||||||||||||||||||||||||||||||||||

**/



    include('pagination.php');

    $p = $_GET['p'];

    (isset($p)) ? $p : 1;

    $max = 10;

    

    // Create the object and set some basic values.

    $pagination = new pagination();

    $pagination->setMax($max);    

    

    // Get the total results, and then calculate how many pages that becomes based on how many results per page.

    $totSql = "SELECT * FROM `table`";

    $totQuery = mysql_query($totSql) or die(mysql_error());

    $totResults = mysql_fetch_array($totQuery);

    $totPages = $pagination->getPages($totResults);

    

    // Set the current page, and get the first result on it.

    $first = $pagination->setPage($p);

    

    // Get the results of the current page.

    $exSql = "SELECT * FROM `table` LIMIT $first, $max";

    $exQuery = mysql_query($exSql) or die(mysql_error());

    $exResults = mysql_fetch_array($exQuery);

    

    // Echo out the current page, and the total amount of pages.

    $page = $pagination->getCurrentPage();

    echo 'Page: '.$page[0].' of '.$page[1];

    

    // Get previous page link, and check if it's valid.

    $prevLink = $p - 1;

    if($pagination->checkLink($prevLink)) {

        

        echo 'Previous Page';

        

    }

    

    // Print all the pages

    foreach($totPages as $pageNumber) {

        

        if($pageNumber == $p) {

            

            echo '<strong>'.$pageNumber.'</strong>';

            

        }

        

        else {

            

            echo $pageNumber;

            

        }

        

    }

    

    // Get the next page link, and check if it's valid.

    $nextLink = $p + 1;

    if($pagination->checkLink($nextLink)) {

        

        echo 'Next Page';

        

    }

    

    // Echo the results...

    



?>

Ofcourse you have to edit the "Next page" for example, to contain a link to the next page..

The good thing with this pagination class is that it's only the core, and it only generates RESULTS, and NO html tagging.
So you can modify the result page easially by just changing the html tagging in that file. Instead of having to go through the class file and change the html tagging in there..

I haven't written a tutorial or a "how-to-use" for this, but I'm sure you'll understand it, otherwise you can just ask if you hit a problem

Hope it helped.

CΛSTΞX · 02-03-2008, 12:33 PM

Thanks a lot Tanax. I am gonna test it... But is this using mysql ? If it is, where should I write database settings ? I am not very good in php, just in middle ;) And can you explain how can I paginate without using mysql ? (Get data from file, not from mysql table ?)

Tanax · 02-03-2008, 02:22 PM

No it's not using mysql.

My example is using mysql, but the core can work with files too.
You would have to count your results, and set how many results per page you want to show.

PHP Code:


			
$totPages = $pagination->getPages($totResults);

That's how many pages in total there are based on how many results, and how many results per page you want to show.

$totResults would be count($articles) in your case..

I'm not sure how you would solve the "exQuery" in your case(without mysql), but you would have to come up with some other way to generate the results on the CURRENT page. As you see, I'm not using the class in any of the $ex~ variables..

But other than that you can use my example.php exactly like it is... xD

CΛSTΞX · 02-03-2008, 08:40 PM

Thanks. I am gonna learn how to

echo pages if the contents are 5+ and show the others in the next page.

ETbyrne · 02-04-2008, 12:42 AM

Very interesting. Btw I just learned a new term, pagination. It even sounds cool!

Tanax · 02-04-2008, 10:04 AM

Quote:

Originally Posted by ETbyrne

Very interesting. Btw I just learned a new term, pagination. It even sounds cool!

hahahahh

It actually does sound cool

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