[SOLVED] Paginating an Array

[Altec]

I currently have an array of quotes that I rotate throughout my site. I want to have on epage to list them all. I currently use this:

    echo '<table class="data_table">';
    foreach($quotes as $quote) {
        static $i = 0;
        $row = ($i % 2 == 1) ? ' class="even"' : '';
        echo '<tr'.$row.'><td>'.$quote.'</td></tr>'."\n";
        $i++;
    }
    echo '</table>';

Which works fine except that I have a lot of quotes. I want to paginate the array with, say, 15 quotes per page.

 

I've searched Google but I can only find classes and snippets. When I do find a tutorial, often it doesn't explain things very well or it is geared towards MySQL database pagination, which confuses me to no end.

 

I'm wondering if someone has a link to a tutorial or can explain pagination. Thanks!

[Maq]

I'm wondering if someone has a link to a tutorial or can explain pagination. Thanks!

 

There's one on phpfreaks but it's database driven, which is worth learning and better in the long run anyway.

 

PHP Basic Pagination

[haku]

You can adapt the tutorial to use array_slice() to output the section of the array that you want.

[Altec]

I figured it out:

<?php

$numquotes = count($quotes);
$quotesperpage = 15;
$totalpages = ceil($numquotes / $quotesperpage);

if(isset($_GET['pagenum']) && is_numeric($_GET['pagenum'])) {
	$page = (int) $_GET['pagenum'];
} else {
	$page = 1;
}

if($page > $totalpages) {
	$page = $totalpages;
}
if($page < 1) {
	$page = 1;
}

$start = ($page - 1) * $quotesperpage;
$stop = $start + $quotesperpage;
$currentquote = $start;

echo '<ul id="pagination" style="margin-bottom: 1.4em;">'."\n";

if($page > 1) {
	$previous = $page - 1;
	echo '<li class="pagination-prev"><a href="'.$url.'/quotes/page/'.$previous.'">Previous</a></li>'."\n";
}

if($page != $totalpages) {
	$next = $page + 1;
	echo '<li class="pagination-next"><a href="'.$url.'/quotes/page/'.$next.'">Next</a></li>'."\n";
}

echo '</ul>'."\n",'<table class="data_table">'."\n";

foreach($quotes as $quote) {
	static $i = 0;

		if($currentquote == $stop || empty($quotes[$currentquote])) {
			break;
		}
		$rowbg = ($i % 2 == 1) ? ' class="even"' : '';
		echo '<tr'.$rowbg.'><td>'.$quotes[$currentquote].'</td></tr>'."\n";

	$currentquote++;
	$i++;
}

echo '</table>'."\n".'<ul id="pagination">'."\n";

if($page > 1) {
	$previous = $page - 1;
	echo '<li class="pagination-prev"><a href="'.$url.'/quotes/page/'.$previous.'">Previous</a></li>'."\n";
}

if($page != $totalpages) {
	$next = $page + 1;
	echo '<li class="pagination-next"><a href="'.$url.'/quotes/page/'.$next.'">Next</a></li>'."\n";
}

echo '</ul>'."\n";
?>

[haku]

Good job putting that together quickly.

 

You probably don't need to cast $page as an int here:

 

if(isset($_GET['pagenum']) && is_numeric($_GET['pagenum'])) {
  $page = (int) $_GET['pagenum'];

 

As you are already checking if it's numeric above. Not a big point really, just something I thought I would mention.