Pagination in php

As your database grows, showing all the results of a query on a single page is no longer practical. This is where pagination comes in handy. You can display your results over a number of pages, each linked to the next, to allow your users to browse your content in bite sized pieces.

<?php

/*

Place code to connect to your DB here.

*/

include(’config.php’); // include your code to connect to DB.

$tbl_name=”"; //your table name

// How many adjacent pages should be shown on each side?

$adjacents = 3;

/*

First get total number of rows in data table.

If you have a WHERE clause in your query, make sure you mirror it here.

*/

$query = “SELECT COUNT(*) as num FROM $tbl_name”;

$total_pages = mysql_fetch_array(mysql_query($query));

$total_pages = $total_pages[num];

/* Setup vars for query. */

$targetpage = “filename.php”; //your file name (the name of this file)

$limit = 2; //how many items to show per page

$page = $_GET['page'];

if($page)

$start = ($page – 1) * $limit; //first item to display on this page

else

$start = 0; //if no page var is given, set start to 0

/* Get data. */

$sql = “SELECT column_name FROM $tbl_name LIMIT $start, $limit”;

$result = mysql_query($sql);

/* Setup page vars for display. */

if ($page == 0) $page = 1; //if no page var is given, default to 1.

$prev = $page – 1; //previous page is page – 1

$next = $page + 1; //next page is page + 1

$lastpage = ceil($total_pages/$limit); //lastpage is = total pages / items per page, rounded up.

$lpm1 = $lastpage – 1; //last page minus 1

/*

Now we apply our rules and draw the pagination object.

We’re actually saving the code to a variable in case we want to draw it more than once.

*/

$pagination = “”;

if($lastpage > 1)

{

$pagination .= “<div class=\”pagination\”>”;

//previous button

if ($page > 1)

$pagination.= “<a href=\”$targetpage?page=$prev\”>« previous</a>”;

else

$pagination.= “<span class=\”disabled\”>« previous</span>”;

//pages

if ($lastpage < 7 + ($adjacents * 2)) //not enough pages to bother breaking it up

{

for ($counter = 1; $counter <= $lastpage; $counter++)

{

if ($counter == $page)

$pagination.= “<span class=\”current\”>$counter</span>”;

else

$pagination.= “<a href=\”$targetpage?page=$counter\”>$counter</a>”;

}

}

elseif($lastpage > 5 + ($adjacents * 2)) //enough pages to hide some

{

//close to beginning; only hide later pages

if($page < 1 + ($adjacents * 2))

{

for ($counter = 1; $counter < 4 + ($adjacents * 2); $counter++)

{

if ($counter == $page)

$pagination.= “<span class=\”current\”>$counter</span>”;

else

$pagination.= “<a href=\”$targetpage?page=$counter\”>$counter</a>”;

}

$pagination.= “…”;

$pagination.= “<a href=\”$targetpage?page=$lpm1\”>$lpm1</a>”;

$pagination.= “<a href=\”$targetpage?page=$lastpage\”>$lastpage</a>”;

}

//in middle; hide some front and some back

elseif($lastpage – ($adjacents * 2) > $page && $page > ($adjacents * 2))

{

$pagination.= “<a href=\”$targetpage?page=1\”>1</a>”;

$pagination.= “<a href=\”$targetpage?page=2\”>2</a>”;

$pagination.= “…”;

for ($counter = $page – $adjacents; $counter <= $page + $adjacents; $counter++)

{

if ($counter == $page)

$pagination.= “<span class=\”current\”>$counter</span>”;

else

$pagination.= “<a href=\”$targetpage?page=$counter\”>$counter</a>”;

}

$pagination.= “…”;

$pagination.= “<a href=\”$targetpage?page=$lpm1\”>$lpm1</a>”;

$pagination.= “<a href=\”$targetpage?page=$lastpage\”>$lastpage</a>”;

}

//close to end; only hide early pages

else

{

$pagination.= “<a href=\”$targetpage?page=1\”>1</a>”;

$pagination.= “<a href=\”$targetpage?page=2\”>2</a>”;

$pagination.= “…”;

for ($counter = $lastpage – (2 + ($adjacents * 2)); $counter <= $lastpage; $counter++)

{

if ($counter == $page)

$pagination.= “<span class=\”current\”>$counter</span>”;

else

$pagination.= “<a href=\”$targetpage?page=$counter\”>$counter</a>”;

}

}

}

//next button

if ($page < $counter – 1)

$pagination.= “<a href=\”$targetpage?page=$next\”>next »</a>”;

else

$pagination.= “<span class=\”disabled\”>next »</span>”;

$pagination.= “</div>\n”;

}

?>

<?php

while($row = mysql_fetch_array($result))

{

// Your while loop here

}

?>

<?=$pagination?>