PHP imitation ZOL pagination class code

<?php

/**
* Function: Pagination Class
* Author:phpox
* Time:Sat Jul 14 18:15:02 CST 2007
*/

defined('PHPOX') or die(header("HTTP/1.1 403 Not Forbidden"));

class page{
public $infocount;
public $pagecount;
public $items;
public $pageno;
public $start;
public $next;
public $prev;
public $maxpages;

public function __construct($infocount,$items,$pageno){
$this->infocount = $infocount;
$this->items = $items;
$this->pageno = $pageno;
$this->pagecount = $this->getpagecount();
$this->justpageno();
$this->start = $this->getstart();
$this->gotoprev();
$this->gotonext();
}

private function justpageno(){
if (emptyempty($this->pageno) || $this->pageno < 1){
$this->pageno = 1;
}
if ($this->pageno > $this->pagecount){
$this->pageno = $this->pagecount;
}
}

private function gotonext(){
$next = $this->pageno + 1;
if ($next > $this->pagecount){
$this->next = $this->pagecount;
}else {
$this->next = $next;
}

}

private function gotoprev(){
$prev = $this->pageno -1;
if ($prev < 1){
$this->prev = 1;
}else {
$this->prev = $prev;
}
}

private function getpagecount(){
return ceil($this->infocount / $this->items);
}

private function getstart(){
if ($this->pageno <= 1){
return 0;
}else {
return ($this->pageno - 1) * $this->items;
}
}

/**
* Style 0(php)
*/
public function showpage($ctlname,$actname,$args = null){
if ($args !== null){
if (is_array($args)){
$str = '&'.encode_url_args($args);
}
}
$out = '';
$out .= "Show {$this->items} messages per page ";
$out .= "Current page{$this->pageno}/{$this->pagecount} ";
$out .= "There are {$this->infocount} messages in total";
$out .= "<a href='?ctl={$ctlname}&act={$actname}&p=1$str'>Home</a> ";
$out .= "<a href='?ctl={$ctlname}&act={$actname}&p={$this->prev}$str'>Previous page</a> ";
$out .= "<a href='?ctl={$ctlname}&act={$actname}&p={$this->next}$str'>Next page</a> ";
$out .= "<a href='?ctl={$ctlname}&act={$actname}&p={$this->pagecount}$str'>Last Page</a> ";
$out .= "Jump to:";
$out .= "<select id=\"page\" name=\"page\" onchange=\"javascript:='?ctl={$ctlname}&act={$actname}$str&p='+[].value;\">\n";
$out .= " <option value=\"1\">Please select </option>\n";
for ($i = 1;$i <= $this->pagecount;$i++){
$out .= " <option value=\"$i\">Page {$i}</option>\n";
}
$out .= "</select>\n";
return $out;
}

/**
* Style 1(html)
*/
function htmlshowpage($path,$list,$film){
$out = '';
$out .= "Show {$this->items} messages per page ";
$out .= "Current page{$this->pageno}/{$this->pagecount} ";
$out .= "There are {$this->infocount} messages in total";
$out .= "<a href='{$path}$list/{$film}_1.html'>Home</a> ";
$out .= "<a href='{$path}$list/{$film}_{$this->prev}.html'>Previous page</a> ";
$out .= "<a href='{$path}$list/{$film}_{$this->next}.html'>Next page</a> ";
$out .= "<a href='{$path}$list/{$film}_{$this->pagecount}.html'>Last Page</a> ";
$out .= "Jump to:";
$out .= "<select id=\"page\" name=\"page\" onchange=\"javascript:='{$path}html/$list/{$film}_'+[].value +'.html'\">\n";
$out .= " <option value=\"1\">Please select </option>\n";
for ($i = 1;$i <= $this->pagecount;$i++){
$out .= " <option value=\"$i\">Page {$i}</option>\n";
}
$out .= "</select>\n";
return $out;
}

/**
* Style 2 (discuz)
*/
function multi($mpurl,$page = 10) {

$multipage = '';
$mpurl .= strpos($mpurl, '?') !== false ? '&' : '?';
$realpages = 1;
if($this->infocount > $this->items) {
$offset = 2;

$realpages = @ceil($this->infocount / $this->items);
$pages = $this->maxpages && $this->maxpages < $realpages ? $this->maxpages : $realpages;

if($page > $pages) {
$from = 1;
$to = $pages;
} else {
$from = $this->pageno - $offset;
$to = $from + $page - 1;
if($from < 1) {
$to = $this->pageno + 1 - $from;
$from = 1;
if($to - $from < $page) {
$to = $page;
}
} elseif($to > $pages) {
$from = $pages - $page + 1;
$to = $pages;
}
}

$multipage = ($this->pageno - $offset > 1 && $pages > $page ? '<a href="'.$mpurl.'page=1" class="first">1 ...</a>' : '').
($this->pageno > 1 ? '<a href="'.$mpurl.'page='.($this->pageno - 1).'" class="p_redirect"><<</a>' : '');
for($i = $from; $i <= $to; $i++) {
$multipage .= $i == $this->pageno ? '<a class="p_curpage">'.$i.'</a>' :'<a href="'.$mpurl.'page='.$i.'" class="p_num">'.$i.'</a>';
}

$multipage .= ($this->pageno < $pages ? '<a href="'.$mpurl.'page='.($this->pageno + 1).'" class="p_redirect">>></a>' : '').
($to < $pages ? '<a href="'.$mpurl.'page='.$pages.'" class="last">... '.$realpages.'</a>' : '').
($pages > $page ? '<kbd><input type="text" name="custompage" size="3" onkeydown="if(==13) {=\''.$mpurl.'page=\'+; return false;}" /></kbd>' : '');

$multipage = $multipage ? '<div class="p_bar"><a class="p_total"> '.$this->infocount.' </a><a class="p_pages"> '.$this->pageno.'/'.$pages.' </a>'.$multipage.'</div>' : '';
}
return $multipage;
}

/**
* Style 3(zol)
*/
public function zol($mpurl)
{
$mpurl .= strpos($mpurl, '?') !== false ? '&' : '?';
$code = '<div class="f22 mt10 hei14">';
$code .= '<div style="line-height:30px">'.$this->pageno.'/'.$this->pagecount.' page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page page </
$code .= '<table border="0" align="right" cellpadding="0" cellspacing="3">';
$code .= '<tr>';
if ($this->pageno == $this->prev)
{
$code .= "<td width='64' align='center' class='bd_hui huei14b'><a disabled='disabled' class='a_hui12b'><<Previous page</a></td>";
}
else
{
$code .= "<td width='64' align='center' class='bd_lan a_lan14'><a href='{$mpurl}page={$this->prev}' class='a_lan12b'><<Previous page</a></td>";
}
$i = 10 ;
$k = 1;
if ($this->pageno < 1)
{
$this->pageno = 1;
}
if ($this->pageno > $this->pagecount)
{
$this->pageno = $this->pagecount;
}
$s = $this->pageno-2;
if ($s <= 0)
{
$s = 1;
}
$e = $this->pageno+2;
if ($e < 5 )
{
$e = 5;
}
if ($e > $this->pagecount)
{
$e = $this->pagecount;
}
for ($j=$s;$j<=$e;$j++)
{
if ($this->pageno == $j)
{
$code .= '<td width="22" bgcolor="#2E6AB1" class="bei14" align="center">'.$j.'</td>';
}
else
{
$code .= "<td width='22' align='center' class='bd_lan a_lan14' onMouseOver=\"='1px solid #2062A4'\" onMouseOut=\"='1px solid #AACCEE'\" style=\"CURSOR: hand\" onClick=\"javascript:=('{$mpurl}page={$j}')\">$j</td>";
}
}
if ($this->pageno == $this->pagecount)
{
$code .= "<td align='center' width='64' class='bd_hui huei14b'><a disabled='disabled' >Next page>></a></td>";
}
else
{
$code .= "<td align='center' width='64' class='bd_lan lan14b'><a href='{$mpurl}page={$this->next}' class='a_lan12b'>next>>></a></td>";
}
$code .= '</tr>';
$code .= '</table>';
$code .= '</div>';
return $code;
}
}