138 lines
5.4 KiB
PHP
138 lines
5.4 KiB
PHP
<?php
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/*
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Digg-Style Pagination
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Autor: jason (http://www.strangerstudios.com/blog/2006/12/29/pagination-update/)
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Update: Victor De la Rocha (http://www.mis-algoritmos.com/2006/11/23/paginacion-al-estilo-digg-y-sabrosus/)
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*/
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function pagination($total_pages,$limit,$page=1,$pagina="default.php",$adjacents=2){
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/*
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$adjacents -> How many adjacent pages should be shown on each side?
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$total_pages -> items
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$limit -> how many items to show per page
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$page -> Current page
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$pagina -> Pagina
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*/
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if(!is_array($pagina)&&!strstr($pagina,"?"))
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$pagina = $pagina."?";
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/* Setup vars for query. */
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if($page)
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$start = ($page - 1) * $limit; //first item to display on this page
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else
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$start = 0; //if no page var is given, set start to 0
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/* Setup page vars for display. */
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if ($page == 0) $page = 1; //if no page var is given, default to 1.
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$prev = $page - 1; //previous page is page - 1
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$next = $page + 1; //next page is page + 1
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$lastpage = ceil($total_pages/$limit); //lastpage is = total pages / items per page, rounded up.
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$lpm1 = $lastpage - 1; //last page minus 1
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/*
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Now we apply our rules and draw the pagination object.
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We're actually saving the code to a variable in case we want to draw it more than once.
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*/
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$pagination = "";
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if($lastpage > 1)
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{
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$pagination .= "<div class=\"pagination\">";
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//previous button
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if ($page > 1){
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],$prev,$pagina[0]):$pagina."&page=$prev";
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$pagination.= "<a href=\"".$pagina_uf."\"> Previous</a>";
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}else
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$pagination.= "<span class=\"disabled\"> Previous</span>";
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//pages
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if ($lastpage < 7 + ($adjacents * 2)) //not enough pages to bother breaking it up
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{
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for ($counter = 1; $counter <= $lastpage; $counter++)
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{
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if ($counter == $page)
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$pagination.= "<span class=\"current\">$counter</span>";
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else{
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],$counter,$pagina[0]):$pagina."&page=$counter";
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$pagination.= "<a href=\"".$pagina_uf."\">$counter</a>";
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}
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}
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}
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elseif($lastpage > 5 + ($adjacents * 2)) //enough pages to hide some
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{
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//close to beginning; only hide later pages
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if($page < 1 + ($adjacents * 2))
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{
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for ($counter = 1; $counter < 4 + ($adjacents * 2); $counter++)
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{
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if ($counter == $page)
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$pagination.= "<span class=\"current\">$counter</span>";
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else{
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],$counter,$pagina[0]):$pagina."&page=$counter";
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$pagination.= "<a href=\"".$pagina_uf."\">$counter</a>";
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}
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}
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$pagination.= "...";
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],$lpm1,$pagina[0]):$pagina."&page=$lpm1";
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$pagination.= "<a href=\"".$pagina_uf."\">$lpm1</a>";
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],$counter,$pagina[0]):$pagina."&page=$counter";
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$pagination.= "<a href=\"".$pagina_uf."\">$lastpage</a>";
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}
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//in middle; hide some front and some back
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elseif($lastpage - ($adjacents * 2) > $page && $page > ($adjacents * 2))
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{
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],1,$pagina[0]):$pagina."&page=1";
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$pagination.= "<a href=\"".$pagina_uf."\">1</a>";
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],2,$pagina[0]):$pagina."&page=2";
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$pagination.= "<a href=\"".$pagina_uf."\">2</a>";
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$pagination.= "...";
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for ($counter = $page - $adjacents; $counter <= $page + $adjacents; $counter++)
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{
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if ($counter == $page)
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$pagination.= "<span class=\"current\">$counter</span>";
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else{
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],$counter,$pagina[0]):$pagina."&page=$counter";
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$pagination.= "<a href=\"".$pagina_uf."\">$counter</a>";
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}
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}
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$pagination.= "...";
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],$lpm1,$pagina[0]):$pagina."&page=$lpm1";
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$pagination.= "<a href=\"".$pagina_uf."\">$lpm1</a>";
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],$lastpage,$pagina[0]):$pagina."&page=$lastpage";
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$pagination.= "<a href=\"".$pagina_uf."\">$lastpage</a>";
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}
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//close to end; only hide early pages
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else
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{
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],1,$pagina[0]):$pagina."&page=1";
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$pagination.= "<a href=\"".$pagina_uf."&page=1\">1</a>";
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],2,$pagina[0]):$pagina."&page=2";
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$pagination.= "<a href=\"".$pagina_uf."&page=2\">2</a>";
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$pagination.= "...";
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for ($counter = $lastpage - (2 + ($adjacents * 2)); $counter <= $lastpage; $counter++)
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{
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if ($counter == $page)
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$pagination.= "<span class=\"current\">$counter</span>";
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else{
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],$counter,$pagina[0]):$pagina."&page=$counter";
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$pagination.= "<a href=\"".$pagina_uf."\">$counter</a>";
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}
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}
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}
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}
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//next button
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if ($page < $counter - 1) {
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$pagina_uf = is_array($pagina)?str_replace($pagina[1],$next,$pagina[0]):$pagina."&page=$next";
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$pagination.= "<a href=\"".$pagina_uf."\">Next </a>";
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}
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else
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$pagination.= "<span class=\"disabled\">Next </span>";
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$pagination.= "</div>\n";
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}
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return $pagination;
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}
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?>
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