万能的分页类代码,PHP代码库,德仔网

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【PHP】万能的分页类
作者:纪广财 / 发布于2015/11/12/ 823

	<?php
	/*
	* To change this template, choose Tools | Templates
	* and open the template in the editor.
	*/
	
	/**
	* 分页类
	* 使用方式:
	* $page = new Page();
	* $page->init(1000, 20);
	* $page->setNotActiveTemplate('<span>&nbsp;{a}&nbsp;</span>');
	* $page->setActiveTemplate('{a}');
	* echo $page->show();
	*
	*
	* @author 风居住的地方
	*/
	class Page {
	 /**
	 * 总条数
	 */
	 private $total;
	 /**
	 * 每页大小
	 */
	 private $pageSize;
	 /**
	 * 总页数
	 */
	 private $pageNum;
	 /**
	 * 当前页
	 */
	 private $page;
	 /**
	 * 地址
	 */
	 private $uri;
	 /**
	 * 分页变量
	 */
	 private $pageParam;
	 /**
	 * LIMIT XX,XX
	 */
	 private $limit;
	 /**
	 * 数字分页显示
	 */
	 private $listnum = 8;
	 /**
	 * 分页显示模板
	 * 可用变量参数
	 * {total} 总数据条数
	 * {pagesize} 每页显示条数
	 * {start} 本页开始条数
	 * {end} 本页结束条数
	 * {pagenum} 共有多少页
	 * {frist} 首页
	 * {pre} 上一页
	 * {next} 下一页
	 * {last} 尾页
	 * {list} 数字分页
	 * {goto} 跳转按钮
	 */
	 private $template = '<div><span>共有{total}条数据</span><span>每页显示{pagesize}条数据</span>,<span>本页{start}-{end}条数据</span><span>共有{pagenum}页</span><ul>{frist}{pre}{list}{next}{last}{goto}</ul></div>';
	 /**
	 * 当前选中的分页链接模板
	 */
	 private $activeTemplate = '<li class="active"><a href="javascript:;">{text}</a></li>';
	 /**
	 * 未选中的分页链接模板
	 */
	 private $notActiveTemplate = '<li><a href="{url}">{text}</a></li>';
	 /**
	 * 显示文本设置
	 */
	 private $config = array('frist' => '首页', 'pre' => '上一页', 'next' => '下一页', 'last' => '尾页');
	 /**
	 * 初始化
	 * @param type $total 总条数
	 * @param type $pageSize 每页大小
	 * @param type $param url附加参数
	 * @param type $pageParam 分页变量
	 */
	 public function init($total, $pageSize, $param = '', $pageParam = 'page') {
	 $this->total = intval($total);
	 $this->pageSize = intval($pageSize);
	 $this->pageParam = $pageParam;
	 $this->uri = $this->geturi($param);
	 $this->pageNum = ceil($this->total / $this->pageSize);
	 $this->page = $this->setPage();
	 $this->limit = $this->setlimit();
	 }
	
	 /**
	 * 设置分页模板
	 * @param type $template 模板配置
	 */
	 public function setTemplate($template) {
	 $this->template = $template;
	 }
	
	 /**
	 * 设置选中分页模板
	 * @param type $activeTemplate 模板配置
	 */
	 public function setActiveTemplate($activeTemplate) {
	 $this->activeTemplate = $activeTemplate;
	 }
	
	 /**
	 * 设置未选中分页模板
	 * @param type $notActiveTemplate 模板配置
	 */
	 public function setNotActiveTemplate($notActiveTemplate) {
	 $this->notActiveTemplate = $notActiveTemplate;
	 }
	
	 /**
	 * 返回分页
	 * @return type
	 */
	 public function show() {
	 return str_ireplace(array(
	 '{total}',
	 '{pagesize}',
	 '{start}',
	 '{end}',
	 '{pagenum}',
	 '{frist}',
	 '{pre}',
	 '{next}',
	 '{last}',
	 '{list}',
	 '{goto}',
	 ), array(
	 $this->total,
	 $this->setPageSize(),
	 $this->star(),
	 $this->end(),
	 $this->pageNum,
	 $this->frist(),
	 $this->prev(),
	 $this->next(),
	 $this->last(),
	 $this->pagelist(),
	 $this->gopage(),
	 ), $this->template);
	 }
	
	 /**
	 * 获取limit起始数
	 * @return type
	 */
	 public function getOffset() {
	 return ($this->page - 1) * $this->pageSize;
	 }
	
	 /**
	 * 设置LIMIT
	 * @return type
	 */
	 private function setlimit() {
	 return "limit " . ($this->page - 1) * $this->pageSize . ",{$this->pageSize}";
	 }
	
	 /**
	 * 获取limit
	 * @param type $args
	 * @return type
	 */
	 public function __get($args) {
	 if ($args == "limit") {
	 return $this->limit;
	 } else {
	 return null;
	 }
	 }
	
	 /**
	 * 初始化当前页
	 * @return int
	 */
	 private function setPage() {
	 if (!empty($_GET[$this->pageParam])) {
	 if ($_GET[$this->pageParam] > 0) {
	 if ($_GET[$this->pageParam] > $this->pageNum)
	 return $this->pageNum;
	 else
	 return $_GET[$this->pageParam];
	 }
	 }
	 return 1;
	 }
	
	 /**
	 * 初始化url
	 * @param type $param
	 * @return string
	 */
	 private function geturi($param) {
	 $url = $_SERVER['REQUEST_URI'] . (strpos($_SERVER['REQUEST_URI'], "?") ? "" : "?") . $param;
	 $parse = parse_url($url);
	 if (isset($parse["query"])) {
	 parse_str($parse["query"], $params);
	 unset($params["page"]);
	 $url = $parse["path"] . "?" . http_build_query($params);
	 return $url;
	 } else {
	 return $url;
	 }
	 }
	
	 /**
	 * 本页开始条数
	 * @return int
	 */
	 private function star() {
	 if ($this->total == 0) {
	 return 0;
	 } else {
	 return ($this->page - 1) * $this->pageSize + 1;
	 }
	 }
	
	 /**
	 * 本页结束条数
	 * @return type
	 */
	 private function end() {
	 return min($this->page * $this->pageSize, $this->total);
	 }
	
	 /**
	 * 设置当前页大小
	 * @return type
	 */
	 private function setPageSize() {
	 return $this->end() - $this->star() + 1;
	 }
	
	 /**
	 * 首页
	 * @return type
	 */
	 private function frist() {
	 $html = '';
	 if ($this->page == 1) {
	 $html .= $this->replace("{$this->uri}&page=1", $this->config['frist'], true);
	 } else {
	 $html .= $this->replace("{$this->uri}&page=1", $this->config['frist'], false);
	 }
	 return $html;
	 }
	
	 /**
	 * 上一页
	 * @return type
	 */
	 private function prev() {
	 $html = '';
	 if ($this->page > 1) {
	 $html .= $this->replace($this->uri.'&page='.($this->page - 1), $this->config['pre'], false);
	 } else {
	 $html .= $this->replace($this->uri.'&page='.($this->page - 1), $this->config['pre'], true);
	 }
	 return $html;
	 }
	
	 /**
	 * 分页数字列表
	 * @return type
	 */
	 private function pagelist() {
	 $linkpage = "";
	 $lastlist = floor($this->listnum / 2);
	 for ($i = $lastlist; $i >= 1; $i--) {
	 $page = $this->page - $i;
	 if ($page >= 1) {
	 $linkpage .= $this->replace("{$this->uri}&page={$page}", $page, false);
	 } else {
	 continue;
	 }
	 }
	 $linkpage .= $this->replace("{$this->uri}&page={$this->page}", $this->page, true);
	 for ($i = 1; $i <= $lastlist; $i++) {
	 $page = $this->page + $i;
	 if ($page <= $this->pageNum) {
	 $linkpage .= $this->replace("{$this->uri}&page={$page}", $page, false);
	 } else {
	 break;
	 }
	 }
	 return $linkpage;
	 }
	
	 /**
	 * 下一页
	 * @return type
	 */
	 private function next() {
	 $html = '';
	 if ($this->page < $this->pageNum) {
	 $html .= $this->replace($this->uri.'&page='.($this->page + 1), $this->config['next'], false);
	 } else {
	 $html .= $this->replace($this->uri.'&page='.($this->page + 1), $this->config['next'], true);
	 }
	 return $html;
	 }
	
	 /**
	 * 最后一页
	 * @return type
	 */
	 private function last() {
	 $html = '';
	 if ($this->page == $this->pageNum) {
	 $html .= $this->replace($this->uri.'&page='.($this->pageNum), $this->config['last'], true);
	 } else {
	 $html .= $this->replace($this->uri.'&page='.($this->pageNum), $this->config['last'], false);
	 }
	 return $html;
	 }
	
	 /**
	 * 跳转按钮
	 * @return string
	 */
	 private function gopage() {
	 $html = '';
	 $html.='&nbsp;<input type="text" value="' . $this->page . '" onkeydown="javascript:if(event.keyCode==13){var page=(this.value>' . $this->pageNum . ')?' . $this->pageNum . ':this.value;location=\'' . $this->uri . '&page=\'+page+\'\'}" style="width:25px;"/><input type="button" onclick="javascript:var page=(this.previousSibling.value>' . $this->pageNum . ')?' . $this->pageNum . ':this.previousSibling.value;location=\'' . $this->uri . '&page=\'+page+\'\'" value="GO"/>';
	 return $html;
	 }
	
	 /**
	 * 模板替换
	 * @param type $replace 替换内容
	 * @param type $result 条件
	 * @return type
	 */
	 private function replace($url, $text, $result = true) {
	 $template = ($result ? $this->activeTemplate : $this->notActiveTemplate);
	
	 $html = str_replace('{url}', $url, $template);
	 $html = str_replace('{text}', $text, $html);
	 return $html;
	 }
	}
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