<?php
/**
* @title: Ekcms page分页类库
* @version: 1.0
* @author: perry <perry@1kyou.com>
* @published: 2013-10-2
*/
class pages {
private $num; //总条数
private $perpage = 20; //每页显示条数
private $urlrule0; //url规则,默认的动态访问方式
private $urlrule; //url规则
private $page = 1; //当前页码
private $pages; //总页数
private $anotherPage; //在默认分页后面添加是显示下拉分页还是显示输入跳转框
private $currentNum; //当前显示第几条到第几条记录,如:1-20
private $strcount; //分页前统计,如: 总计：47条 每页显示11条
private $strbefore; //分页代码父节点样式开始
private $strafter; //分页代码父节点样式结束
private $isStatic; //是否为静态分页
private $indexname; //静态分页第一页文件名
function __construct($num,$perpage,$pagevar,$page,$urlrule ='',$mkdir=''){
$url = 'http://'.$_SERVER ["HTTP_HOST"].$_SERVER ["PHP_SELF"];
$aqs = $_SERVER ["QUERY_STRING"]; //网址查询参数
$this->num = $num;
$this->perpage = $perpage;
$this->page = $page;
$this->pages = ceil ( $num / $perpage );
$iCount = ($page * $perpage) > $num ? $num : $page * $perpage;
$this->currentNum = ($page - 1) * $perpage + 1 . '-' . $iCount;
$this->strcount = "<label>总计:{$this->num}条 每页{$this->perpage}条</label>";
$this->strcount_en = "<div class="pages"><span class="pagecount">Count:{$this->page}/{$this->num}";
$this->strbefore = ' ';
$this->strafter = '';
$this->urlrule0 = !empty ( $aqs ) ? (preg_match ( '/' . $pagevar . '=/i', $aqs ) ? $url . '?' . preg_replace ( '/' . $pagevar . '=(d+)/i', "$pagevar=", $aqs ) : $url . '?' . $aqs . '&' . $pagevar . '=') : $url . '?' . $pagevar . '=';
if (! empty ( $urlrule ) && preg_match ( '/(.*?)/catid=(.*)/(d+).(.*)/i', $urlrule )){//静态分页样式
$this->isStatic = true;
$this->urlrule = preg_replace ( '/(.*?)/catid=(.*)/(d+).(.*)/i', "$1/lists-$2-%d.$4", $urlrule );
$this->indexname = preg_replace ( '/(.*?)/catid=(.*)/(d+).(.*)/i', "$1/lists-$2-1.$4", $urlrule );
global $isMakeHtml, $mkdir;
if ($isMakeHtml){
$pageto = $page + 1;
if ($pageto <= $this->pages){
makelist ( $this->urlrule0 . $pageto, sprintf ( $this->urlrule, $pageto ), $mkdir );
}
}
}else{
$this->urlrule = $this->urlrule0;
}
}
//生成分页链接URL
private function setUrl($cur_page) {
$cur_page = $cur_page == 0 ? 1 : ($cur_page >= $this->pages ? $this->pages : $cur_page);
$pageHref = '';
if ($this->isStatic) {
if ($cur_page == 1)
$pageHref = $this->indexname;
else
$pageHref = sprintf ( $this->urlrule, $cur_page );
} else
$pageHref = $this->urlrule . $cur_page;
return $pageHref;
}
//生成分页样式 显示模式
public function show($mode = 1) {
$showmode = 'show_mode' . $mode;
if (method_exists ( $this, $showmode ))
return $this->$showmode ();
else
return $this->show_mode1 ();
}
//有首页上一页下一页尾页的显示模式
private function show_mode1() {
if ($this->num > $this->perpage) {
switch ($this->page) {
case 1 :
$firstpage = '首页';
$prepage = '上一页';
$nextpage = '<a href="' . $this->setUrl ( $this->page + 1 ) . '">下一页</a>';
$lastpage = '<a href="' . $this->setUrl ( $this->pages ) . '">尾页</a>';
break;
case $this->pages :
$firstpage = '<a href="' . $this->setUrl ( 1 ) . '">首页</a>';
$prepage = '<a href="' . $this->setUrl ( $this->page - 1 ) . '">上一页</a>';
$nextpage = '下一页';
$lastpage = '尾页';
break;
default :
$firstpage = '<a href="' . $this->setUrl ( 1 ) . '">首页</a>';
$prepage = '<a href="' . $this->setUrl ( $this->page - 1 ) . '">上一页</a>';
$nextpage = '<a href="' . $this->setUrl ( $this->page + 1 ) . '">下一页</a>';
$lastpage = '<a href="' . $this->setUrl ( $this->pages ) . '">尾页</a>';
break;
}
$content = $this->strcount . $this->strbefore . " $firstpage $prepage $nextpage $lastpage " . $this->anotherPage . " " . $this->strafter;
} else {
$content="{$this->strcount} {$this->strbefore} 首页 上一页 下一页 尾页 {$this->strafter}";
}
return $content;
}
//有首页上一页下一页尾页数字的显示模式
private function show_mode2() {
if ($this->num > $this->perpage) {
switch ($this->page) {
case 1 :
$firstpage = '<label>首页</label>';
$prepage = '<label>上一页</label>';
$nextpage = '<a href="' . $this->setUrl ( $this->page + 1 ) . '">下一页</a>';
$lastpage = '<a href="' . $this->setUrl ( $this->pages ) . '">尾页</a>';
break;
case $this->pages :
$firstpage = '<a href="' . $this->setUrl ( 1 ) . '">首页</a>';
$prepage = '<a href="' . $this->setUrl ( $this->page - 1 ) . '">上一页</a>';
$nextpage = '<label>下一页</label>';
$lastpage = '<label>尾页</label>';
break;
default :
$firstpage = '<a href="' . $this->setUrl ( 1 ) . '">首页</a>';
$prepage = '<a href="' . $this->setUrl ( $this->page - 1 ) . '">上一页</a>';
$nextpage = '<a href="' . $this->setUrl ( $this->page + 1 ) . '">下一页</a>';
$lastpage = '<a href="' . $this->setUrl ( $this->pages ) . '">尾页</a>';
break;
}
$pagebar = '';
$init = 1;
$page_len = 10; //这里是设置显示多少个数字分页的数字
$max_p = $this->pages;
$pages = $this->pages;
$page_len = $page_len % 2 == 0 ? $page_len : $page_len + 1; //页码个数
$pageoffset = $page_len % 2 == 0 ? $page_len / 2 : ($page_len - 1) / 2; //页码个数左右偏移量
$pageoffset_l = $page_len % 2 == 0 ? $pageoffset - 1 : $pageoffset;
$pageoffset_r = $pageoffset;
$page = $this->page;
if ($pages > $page_len) {
//如果当前页小于等于左偏移
if ($page <= $pageoffset) {
$init = 1;
$max_p = $page_len;
} else { //如果当前页大于左偏移
//如果当前页码右偏移超出最大分页数
if ($page + $pageoffset_r >= $pages + 1) {
$init = $pages + 1 - 10;
} else {
//左右偏移都存在时的计算
$init = $page - $pageoffset_l;
$max_p = $page + $pageoffset_r;
}
}
}
for($i = $init; $i <= $max_p; $i ++) {
$pageStyle = $i == $this->page ? "class="current"" : '';
if (empty ( $pageStyle ))
$pagebar .= "<a href="" . $this->setUrl ( $i ) . "" $pageStyle>$i</a> ";
else
$pagebar .= "<span $pageStyle><u>$i</u></span> ";
}
$content = $this->strcount . $this->strbefore . " $firstpage $prepage $pagebar $nextpage $lastpage " . $this->anotherPage . " " . $this->strafter;
} else {
$content="{$this->strcount} {$this->strbefore} <label>首页</label> <label>上一页</label> <label>下一页</label> <label>尾页</label> {$this->strafter}";
}
return $content;
}
//有Home Previous Next End数字的显示模式
private function show_mode3() {
if ($this->num > $this->perpage) {
switch ($this->page) {
case 1 :
$firstpage = 'Home';
$prepage = 'Previous';
$nextpage = '<a href="' . $this->setUrl ( $this->page + 1 ) . '">Next</a>';
$lastpage = '<a href="' . $this->setUrl ( $this->pages ) . '">End</a>';
break;
case $this->pages :
$firstpage = '<a href="' . $this->setUrl ( 1 ) . '">Home</a>';
$prepage = '<a href="' . $this->setUrl ( $this->page - 1 ) . '">Previous</a>';
$nextpage = 'Next';
$lastpage = 'End';
break;
default :
$firstpage = '<a href="' . $this->setUrl ( 1 ) . '">Home</a>';
$prepage = '<a href="' . $this->setUrl ( $this->page - 1 ) . '">Previous</a>';
$nextpage = '<a href="' . $this->setUrl ( $this->page + 1 ) . '">Next</a>';
$lastpage = '<a href="' . $this->setUrl ( $this->pages ) . '">End</a>';
break;
}
$pagebar = '';
$init = 1;
$page_len = 10; //这里是设置显示多少个数字分页的数字
$max_p = $this->pages;
$pages = $this->pages;
$page_len = $page_len % 2 == 0 ? $page_len : $page_len + 1; //页码个数
$pageoffset = $page_len % 2 == 0 ? $page_len / 2 : ($page_len - 1) / 2; //页码个数左右偏移量
$pageoffset_l = $page_len % 2 == 0 ? $pageoffset - 1 : $pageoffset;
$pageoffset_r = $pageoffset;
$page = $this->page;
if ($pages > $page_len) {
//如果当前页小于等于左偏移
if ($page <= $pageoffset) {
$init = 1;
$max_p = $page_len;
} else { //如果当前页大于左偏移
//如果当前页码右偏移超出最大分页数
if ($page + $pageoffset_r >= $pages + 1) {
$init = $pages + 1 - 10;
} else {
//左右偏移都存在时的计算
$init = $page - $pageoffset_l;
$max_p = $page + $pageoffset_r;
}
}
}
for($i = $init; $i <= $max_p; $i ++) {
$pageStyle = $i == $this->page ? "class="current"" : '';
if (empty ( $pageStyle ))
$pagebar .= "<a href="" . $this->setUrl ( $i ) . "" $pageStyle>$i</a> ";
else
$pagebar .= "<span $pageStyle><u>$i</u></span> ";
}
$content = $this->strcount_en . $this->strbefore . " $firstpage $prepage $pagebar $nextpage $lastpage " . $this->anotherPage . " " . $this->strafter;
} else {
$content="{$this->strcount_en} {$this->strbefore} Home Previous Next End {$this->strafter}";
}
return $content;
}
}
?>