php实现分页工具类分享_PHP
代码:
复制代码 代码如下:
/**
* 把中间的看成一个可以滑动的固定长度的尺子
*
* 把$this->_totalShowPages 当成一个可以滑动的固定长度尺子,
* 然后$this->_totalPages就是一个给定长度的木块,尺子在这个
* 木块上滑动。情况两种:
* 1. 尺子长度大于木块长度,那么就直接输出所有的页码;
* 2. 尺子长度小于木块长度,那么就只用找到输出这个尺子长度页
* 数的起始点——$start, $end;
* @Access protected
* @Return void
* @Exception none
*/
protected function _getShowPageNumber()
{
$pageHtml = '';
//找到$start点
if($this->_curPage - 2 > 1) {
$start = $this->_curPage - 2;
} else {
$start = 1;
}
//找到$end 点
$end = $start + $this->_totalShowPages;
if($end >= $this->_totalPages) {
$end = $this->_totalPages;
$start = $end - $this->_totalShowPages; //保证页面显示的长度为$this->_totalShowPages
}
if($start != 1) {
$pageHtml .= $this->_getPageHtml(1);
$preMore = $this->_curPage - $this->_totalShowPages;
if($preMore $preMore = 1;
}
$pageHtml .= $this->_getMorePageHtml($preMore);
}
for($page = $start; $page $pageHtml .= $this->_getPageHtml($page);
}
if($end != $this->_totalPages) {
$pageHtml .= $this->_getMorePageHtml($end);
}
$pageHtml .= $this->_getNormalPageHtml($this->_totalPages);
return $pageHtml;
}
第一种老想法的代码实现:
复制代码 代码如下:
/**
* 一步步的来
*
* @desc
*
* @Access protected
* @Return void
* @Exception none
*/
protected function _getShowPageNumberTwo()
{
if($this->_curPage _totalShowPages) {
for($page = 1; $page _totalShowPages; $page ++) {
$pageHtml .= $this->_getPageHtml($page);
}
$pageHtml .= $this->_getMorePageHtml($this->_totalShowPages);
$pageHtml .= $this->_getNormalPageHtml($this->_totalPages);
} else {
$pageHtml .= $this->_getNormalPageHtml(1);
if($this->_curPage == $this->_totalShowPages) {
$pageHtml .= $this->_getMorePageHtml(1);
} else {
$pageHtml .= $this->_getMorePageHtml($this->_curPage - $this->_totalShowPages);
}
if($this->_curPage + $this->_totalShowPages >= $this->_totalPages) {
for($page = $this->_totalPages - $this->_totalShowPages; $page _totalPages; $page ++) {
$pageHtml .= $this->_getPageHtml($page);
}
} else {
$start = $this->_curPage - 2;
$end = $this->_curPage + $this->_totalShowPages - 2;
for($page = $start; $page $pageHtml .= $this->_getPageHtml($page);
}
$pageHtml .= $this->_getMorePageHtml($this->_curPage + $this->_totalShowPages - 2);
$pageHtml .= $this->_getNormalPageHtml($this->_totalPages);
}
}
return $pageHtml;
}

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