// +----------------------------------------------------------------------
namespace Page;
class ajaxPage {
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 = 'page'; //分页参数名
public $url = ''; //当前链接URL
private $nowPage = 1;
public $ext = '/';
// 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' => '首页',
'lasts' => '最后一页',
'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(), $ext = '/') {
// Config('VAR_PAGE') && $this->p = Config('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;
$this->nowPage = empty(input($this->p)) ? 1 : input($this->p, 'intval');
$this->firstRow = $this->listRows * ($this->nowPage - 1);
$this->ext = $ext;
}
/**
* 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('[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]';
$url_tmp = $flag ='';
/* 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;
$prev_url = $this->url($up_row);
$up_page = $up_row > 0 ? '' : '';
//下一页
$down_row = $this->nowPage + 1;
$down_page = ($down_row <= $this->totalPages) ? '' : '';
//第一页
$the_first = '';
if ($this->totalPages > $this->rollPage && ($this->nowPage - $now_cool_page) > 2) {
$the_first = '';
//添加省略号
if ($this->nowPage > 4)
$the_first .= '...';
}
//最后一页
$the_end = '';
if ($this->totalPages > $this->rollPage && ($this->nowPage + $now_cool_page) < $this->totalPages) {
if (($this->totalPages - ($this->nowPage + 2)) >= 1) {
$the_end = '...';
}
$the_end .= '';
}
//数字连接
$link_page = "";
//当前页等于 1/2/3/4 的时候显示 5 个
$page_limit = [1, 2, 3, 4];
if (in_array($this->nowPage, $page_limit)) {
$show_num = 5;
} else {
$show_num = 0;
}
for ($i = 1; $i <= $this->rollPage; $i++) {
if (($this->nowPage - $now_cool_page) <= 0 || ($this->nowPage - $now_cool_page_ceil) == 1) {
$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) {
//如果是第一页 去除 _1参数
$curr_url = $this->url($page);
if ($page == 1) {
$curr_url = $this->url($page);
}
if ($i <= $show_num || $show_num == 0 || $this->totalPages < 6) {
//如果总页数不小于7，当前页不大于 4，隐藏2
if (!(($i == 1 && $this->totalPages < 7 && $this->nowPage > 4))) {
$link_page .= '';
}
//如果仅有5页，并且为第5页的时候
if ($i == 1 && $this->totalPages == 5 && $this->nowPage == 5) {
$link_page = '';
}
}
} else {
break;
}
} else {
if ($page > 0 && $this->totalPages != 1) {
$link_page .= '';
}
}
}
if ($this->totalPages > 1) {
//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}";
}
}
}