// +----------------------------------------------------------------------
namespace Think;
class Page{
public $firstRow; // 起始行数
public $listRows; // 列表每页显示行数
public $parameter; // 分页跳转时要带的参数
public $totalRows; // 总行数
public $totalPages; // 分页总页面数
public $rollPage = 11;// 分页栏每页显示的页数
public $lastSuffix = true; // 最后一页是否显示总页数
private $p = 'p'; //分页参数名
private $url = ''; //当前链接URL
private $nowPage = 1;
//以下是url重写参数
public $rewrite_switch = false; //boole 默认关闭
public $rewrite_default_url; //string 默认网址，如：/1/index_[PAGE].html
public $rewrite_unset_parameter; //array(),如url：/1/index_3.html?catid=1&p=3 不希望?后面带的参数，一般有（catid,p）
// 分页显示定制
private $config = array(
'header' => '共 %TOTAL_ROW% 条记录',
'prev' => '<',
'next' => '>',
'first' => '首页',
'last' => '尾页',
'theme' => '%HEADER% %FIRST% %UP_PAGE% %LINK_PAGE% %DOWN_PAGE% %END%',
);
// 分页显示定制--English
private $config_en = array(
'header' => 'Total %TOTAL_ROW% item',
'prev' => 'Pre',
'next' => 'Next',
'first' => 'Home',
'last' => 'Last',
'theme' => '%HEADER% %FIRST% %UP_PAGE% %LINK_PAGE% %DOWN_PAGE% %END%',
);
/**
* 架构函数
* @param array $totalRows 总的记录数
* @param array $listRows 每页显示记录数
* @param array $parameter 分页跳转的参数
*/
public function __construct($totalRows, $listRows=20, $parameter = array()) {
C('VAR_PAGE') && $this->p = C('VAR_PAGE'); //设置分页参数名称
/* 基础设置 */
$this->totalRows = $totalRows; //设置总记录数
$this->listRows = $listRows; //设置每页显示行数
$this->parameter = empty($parameter) ? $_GET : $parameter;
$this->nowPage = empty($_GET[$this->p]) ? 1 : intval($_GET[$this->p]);
$this->nowPage = $this->nowPage>0 ? $this->nowPage : 1;
$this->firstRow = $this->listRows * ($this->nowPage - 1);
}
/**
* 定制分页链接设置
* @param string $name 设置名称
* @param string $value 设置值
*/
public function setConfig($name,$value) {
if(isset($this->config[$name])) {
$this->config[$name] = $value;
}
}
/**
* 生成链接URL
* @param integer $page 页码
* @return string
*/
private function url($page){
//伪静态模式
if($this->rewrite_switch==true){
//如果是第一页则默认到index，防止出现index.html和index_1.html都是同一页
if($page==1){
$pageurl=str_replace('index_[PAGE]',"index",$this->rewrite_default_url);
}else{
$pageurl=str_replace('[PAGE]',$page,$this->rewrite_default_url);
}
if($_GET&&$this->rewrite_unset_parameter){
//销毁不需要的参数
$get=$_GET;//这里一定要把get变量重命名一下，否则在当unset的时候，在模板里可能有些参数就无法接收了
foreach($this->rewrite_unset_parameter as $v){
unset($get[$v]);
}
//将其它参数赋值给分页链接
foreach($get as $key=> $v){
if($str){
$str.="&".$key."=".htmlspecialchars($v);
}else{
$str="?".$key."=".htmlspecialchars($v);
}
}
$pageurl.=$str;
}
return $pageurl;
}else{
return str_replace(urlencode('[PAGE]'), $page, $this->url);
}
}
/**
* 组装分页链接
* @return string
*/
public function show($lang="cn") {
if($lang=="en"){
$this->config=$this->config_en;
}
if(0 == $this->totalRows) return '';
/* 生成URL */
$this->parameter[$this->p] = '[PAGE]';
$this->url = U(ACTION_NAME, $this->parameter);
/* 计算分页信息 */
$this->totalPages = ceil($this->totalRows / $this->listRows); //总页数
if(!empty($this->totalPages) && $this->nowPage > $this->totalPages) {
$this->nowPage = $this->totalPages;
}
/* 计算分页临时变量 */
$now_cool_page = $this->rollPage/2;
$now_cool_page_ceil = ceil($now_cool_page);
$this->lastSuffix && $this->config['last'] = $this->totalPages;
//上一页
$up_row = $this->nowPage - 1;
$up_page = $up_row > 0 ? '' . $this->config['prev'] . '' : '';
//下一页
$down_row = $this->nowPage + 1;
$down_page = ($down_row <= $this->totalPages) ? '' . $this->config['next'] . '' : '';
//第一页
$the_first = '';
if($this->totalPages > $this->rollPage && ($this->nowPage - $now_cool_page) >= 1){
$the_first = '' . $this->config['first'] . '';
}
//最后一页
$the_end = '';
if($this->totalPages > $this->rollPage && ($this->nowPage + $now_cool_page) < $this->totalPages){
$the_end = '' . $this->config['last'] . '';
}
//数字连接
$link_page = "";
for($i = 1; $i <= $this->rollPage; $i++){
if(($this->nowPage - $now_cool_page) <= 0 ){
$page = $i;
}elseif(($this->nowPage + $now_cool_page - 1) >= $this->totalPages){
$page = $this->totalPages - $this->rollPage + $i;
}else{
$page = $this->nowPage - $now_cool_page_ceil + $i;
}
if($page > 0 && $page != $this->nowPage){
if($page <= $this->totalPages){
$link_page .= '' . $page . '';
}else{
break;
}
}else{
if($page > 0 && $this->totalPages != 1){
$link_page .= '' . $page . '';
}
}
}
//替换分页内容
$page_str = str_replace(
array('%HEADER%', '%NOW_PAGE%', '%UP_PAGE%', '%DOWN_PAGE%', '%FIRST%', '%LINK_PAGE%', '%END%', '%TOTAL_ROW%', '%TOTAL_PAGE%'),
array($this->config['header'], $this->nowPage, $up_page, $down_page, $the_first, $link_page, $the_end, $this->totalRows, $this->totalPages),
$this->config['theme']);
return $page_str;
}
}