// +----------------------------------------------------------------------
namespace Think;
/**
* 分页类
*/
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
private $p = 'p'; //分页参数名
private $url = ''; //当前链接URL
private $nowPage = 1;
// 分页显示定制
private $config = array(
'header' => '共 %TOTAL_ROW% 条记录',
'prev' => '上一页',
'next' => '下一页',
'first' => '1...',
'last' => '...%TOTAL_PAGE%',
'theme' => '%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);
if ($this->isWap()) {
$this->rollPage = 3;
$this->config['theme'] = '%UP_PAGE%%LINK_PAGE%%DOWN_PAGE%';
}
}
/**
* 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)
{
return str_replace(urlencode('[PAGE]'), $page, $this->url);
}
/**
* 组装分页链接
* @return string
*/
public function show()
{
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);
//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 && 1 != $this->totalPages) {
$link_page .= '' . $page . '';
}
}
}
if ($link_page) {
if (!$up_page) {
$up_page = '没有了';
}
if (!$down_page) {
$down_page = '没有了';
}
}
//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}";
}
/**
* 检测是否使用手机访问
* @access public
* @return bool
*/
public function isWap()
{
if (isset($_SERVER['HTTP_VIA']) && stristr($_SERVER['HTTP_VIA'], "wap")) {
return true;
} elseif (isset($_SERVER['HTTP_ACCEPT']) && strpos(strtoupper($_SERVER['HTTP_ACCEPT']), "VND.WAP.WML")) {
return true;
} elseif (isset($_SERVER['HTTP_X_WAP_PROFILE']) || isset($_SERVER['HTTP_PROFILE'])) {
return true;
} elseif (isset($_SERVER['HTTP_USER_AGENT']) && preg_match('/(blackberry|configuration\/cldc|hp |hp-|htc |htc_|htc-|iemobile|kindle|midp|mmp|motorola|mobile|nokia|opera mini|opera |Googlebot-Mobile|YahooSeeker\/M1A1-R2D2|android|iphone|ipod|mobi|palm|palmos|pocket|portalmmm|ppc;|smartphone|sonyericsson|sqh|spv|symbian|treo|up.browser|up.link|vodafone|windows ce|xda |xda_)/i', $_SERVER['HTTP_USER_AGENT'])) {
return true;
} else {
return false;
}
}
}