分页类——尾部页码导航

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发布： 2016-07-25 09:01:02

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分页类——尾部页码导航

/**
* 生成Comment的尾部分页导航
* @author 李俊
*
*/
class cmtTail{
private $currentPage;
private $totalPage;
/**
* 生成页码导航--总控函数
* @param string $currentPage 当前页码
* @param string $totalPage 总页数
* @throws Exception 页码小于1将会抛出异常
* @return string
*/
function __do($currentPage, $totalPage) {
$this->currentPage=$currentPage;
$this->totalPage=$totalPage;
if($this->totalPage if($this->currentPage==1){//当前页是第一页
$str='上一页'.$this->currentTag();
for ($i = 2; $i totalPage; $i++) {
$str=$str.$this->commonTag($i);
}
$str=$str.$this->next();
}elseif ($this->currentPage==$this->totalPage){//已跳至最后一页
$str=$this->up();
for ($i = 1; $i totalPage-1; $i++) {
$str=$str.$this->commonTag($i);
}
$str=$str.$this->currentTag();
$str=$str.$this->next();
}else{
$str=$this->up();
for($i=1; $icurrentPage; $i++){
$str=$str.$this->commonTag($i);
}
$str=$str.$this->currentTag();//生成当前页标签
for ($i = $this->currentPage+1; $i totalPage; $i++) {
$str=$str.$this->commonTag($i);
}
$str=$str.$this->next();
}
}elseif ($this->totalPage>10){//页码大于10
if($this->currentPage==1){//8+2
$str='上一页'.$this->currentTag();
for ($i = 2; $i $str=$str.$this->commonTag($i);
}
$str=$str.'...';//添加省略号
$str=$str.$this->commonTag($this->totalPage-1);
$str=$str.$this->commonTag($this->totalPage);
}elseif($this->currentPage==$this->totalPage) {//当前为最后一页
$str=$this->up();
$str=$str.$this->commonTag(1);
$str=$str.'...';//添加省略号
for ($i = $this->totalPage-6; $i totalPage; $i++) {
$str=$str.$this->commonTag($i);
}
$str=$str.$this->currentTag();
$str=$str.$this->next();
}else {
if ($this->currentPage $str=$this->up();
for ($i = 1; $i currentPage; $i++) {
$str=$str.$this->commonTag($i);
}
$str=$str.$this->currentTag();
for ($i = $this->currentPage+1; $i $str=$str.$this->commonTag($i);
}
$str=$str.'...';//添加省略号
$str=$str.$this->commonTag($this->totalPage);
$str=$str.$this->next();
}else {
if ($this->currentPage>=$this->totalPage-4) {
$str=$this->up();
$str=$str.$this->commonTag(1);
$str=$str.'...';//添加省略号
for ($i = $this->totalPage-6; $i currentPage; $i++) {
$str=$str.$this->commonTag($i);
}
$str=$str.$this->currentTag();
for ($i = $this->currentPage+1; $i totalPage; $i++) {
$str=$str.$this->commonTag($i);
}
$str=$str.$this->next();
}elseif ($this->currentPagetotalPage-4){//1+5+1
$str=$this->up();
$str=$str.$this->commonTag(1);
$str=$str.'...';//添加省略号
$str=$str.$this->commonTag($this->currentPage-2);
$str=$str.$this->commonTag($this->currentPage-1);
$str=$str.$this->currentTag();
$str=$str.$this->commonTag($this->currentPage+1);
$str=$str.$this->commonTag($this->currentPage+2);
$str=$str.'...';//添加省略号
$str=$str.$this->commonTag($this->totalPage);
$str=$str.$this->next();
}
};
}
}elseif ($this->totalPage throw new Exception("页面不可能小于1");
}
return $str;
}
/**
* 一般标签
* @param int $param 页码
* @return string
*/
function commonTag($param) {
return ''.$param.'';
}
/**
* 生成当前页标签
* @param int $param 页码
* @return string
*/
function currentTag() {
return ''.$this->currentPage.'';
}
/**
* 生成下一页标签
* @param int $param 下一页页码
* @return string
*/
function next() {
if ($this->currentPage==$this->totalPage) {
return '下一页';
}
return '下一页';
}
/**
* 生成上一页标签
* @param int $param 上一页页码
* @return string
*/
function up() {
if ($this->currentPage==1){
return '上一页';
}else{
return '上一页';
}
}
/**
* 实例化cmtTail,
* 功能：生成Comment的尾部分页导航
* @param string $currentPage 当前页码
* @param string $totalPage 总页数
* @return string 返回html标签字符串
*/
static function GO($currentPage, $totalPage) {
$p=new cmtTail();
return $p->__do($currentPage, $totalPage);
}
}

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