<?php
/**
* Page Class
* 实现各种分页样式
* @author yangsh
*/
class Pager {
/**
* 数据总数
* @var integer
*/
private $totalItems;
/**
* 每页显示数
* @var integer
*/
private $pageSize = 20;
/**
* 页面显示的页码标号的数量
* @var integer
*/
private $codeNum = 10;
/**
* 跳转链接
* @var string(url)
*/
private $jumpLink = '';
/**
* 分页语言
* @var string
*/
private $parseLang = array();
/**
* 装载页码的[Key]值
* @var integer
*/
private $keyPage = 'pTag';
/**
* 构造函数
* @param $totalItems 总的信息数量
* @param $pageSize 每页显示的条数
* @param $codeNum 页面显示的页码标号的数量（取偶数，非偶数时取加1）
* @param $language 分页显示语言(en,zh,sign)
* @param $keyPage 装载分页码标号的变量名称
* @param $curtPage 初始页
* @param $path 分页页面链接地址
*/
public function __construct($totalItems,$pageSize='',$language='',$codeNum='') {
$this->setTotalItems($totalItems); //总的数据
$this->setPageSize($pageSize); //每页显示数
$this->setParseLang($language); //分页语言
$this->setCodeNum($codeNum); //页面显示的页码标号的数量
}
/**
* 装载默认分页HTML
* @return string(html)
*/
public function parsePage() {
$str = $this->getHtmlInfoPage(); //分页信息
$str .= $this->getHtmlFirstPage(); //第一页
$str .= $this->getHtmlLastPage(); //上一页
$str .= $this->getHtmlPageList('',''); //页码
$str .= $this->getHtmlNextPage(); //下一页
$str .= $this->getHtmlFinallyPage(); //最后页
$str .= $this->getHtmlSelectPage(); //下拉列表
return $str;
}
/**
* 设置分页语言
* @param string $language 语言简写(en|zh|sign)
* @return array
*/
private function setParseLang($language) {
$aryLang = array(
'sign' => array(
'LAST_PAGE' => '<',
'NEXT_PAGE' => '>',
'FIRST_PAGE' => '<<',
'FINALLY_PAGE'=> '>>',
'INFO_PAGE' => '{CURRENT_PAGE}/{TOTAL_PAGE}',
'JUMP' => 'GO',
'PAGE' => '',
'FROM' => '',
'BUTTON' => '',
),
'cn' => array(
'LAST_PAGE' => '上一页',
'NEXT_PAGE' => '下一页',
'FIRST_PAGE' => '首页',
'FINALLY_PAGE'=> '尾页',
'INFO_PAGE' => '页次:<b>{CURRENT_PAGE}</b>/<b>{TOTAL_PAGE}</b>页 共<b>{TOTALITEM}</b>条记录 ',
'JUMP' => '转到',
'PAGE' => '页',
'FROM' => '第',
'BUTTON' => '跳转',
),
'en' => array(
'LAST_PAGE' => 'LAST',
'NEXT_PAGE' => 'NEXT',
'FIRST_PAGE' => 'FIRST',
'FINALLY_PAGE'=> 'FINAL',
'INFO_PAGE' => 'PAGE {CURRENT_PAGE} OF {TOTAL_PAGE}',
'JUMP' => 'GO',
'PAGE' => '',
'FROM' => '',
'BUTTON' => '',
),
);
if(in_array($language, array_keys($aryLang))) {
$this->parseLang = $aryLang[$language];
} else {
$this->parseLang = $aryLang['cn'];
}
}
/**
* 测试用
* 得到一些分页相关信息
* @return string
*/
public function getMessage() {
$info = '<center><br><br><table border=1 bordercolor=red><tr><td>';
$info .= '<font color=blue>';
$info .= '<center>----------分页类------------</center>';
$info .= '<b>初始设置：</b><br>共有信息数量 totalItems：' .$this->totalItems;
$info .= '<br>设置每页显示数量 pageSize：' .$this->pageSize;
$info .= '<br>设置每页显示的页码数 codeNum：' .$this->codeNum;
$info .= '<br>设置装载页码的变量名 keyPage：' .$this->keyPage;
$info .= '<br>设置跳转的URL jumpLink：' .$this->jumpLink;
$info .= '<br><b>返回信息：</b>';
$info .= '<br>得到的总页数 getPageNum()：' .$this->getPageNum();
$info .= '<br>得到的当前页码 curtPage:' .$this->getCurtPage();
$info .= '<br>得到的数据库检索条件 getSqlLimit()：' .$this->getSqlLimit();
$info .= '<br><b>所有样式:</b><br>';
$info .= 'getHtmlInfoPage(): '.$this->getHtmlInfoPage().'<br>getHtmlFirstPage():'.$this->getHtmlFirstPage().'<br>getHtmlLastPage():'.$this->getHtmlLastPage();
$info .= '<br>getHtmlPageList(): '.$this->getHtmlPageList('[', ']').'<br>getHtmlNextPage():'.$this->getHtmlNextPage().'<br>getHtmlFinallyPage():'.$this->getHtmlFinallyPage();
$info .= '<br>getHtmlSelectPage(): '.$this->getHtmlSelectPage();
$info .= '</font>';
$info .= '</td></tr></table><br><br></center>';
print_r($info);
}
/**
* 设置记录总数
* @param int $total
* @return void
*/
private function setTotalItems($total) {
$this->totalItems = max(1, intval($total));
}
/**
* 设置装载页码的[key],为空时表示生成静态页的分页
* @param string $str(ex:page)
* @return void
*/
public function setKeyPage($str) {
if (!empty($str)) {
$this->keyPage = $str;
}
}
/**
* 设置页面显示的页码标号的数量
* @param integer $codeNum
*/
private function setCodeNum($codeNum) {
if (!empty($codeNum)) {
$this->codeNum = max(2, $codeNum+$codeNum%2); //该值须为偶数
}
}
/**
* 设置跳转路径(ex: /path/ex.php[htm])
* @param string $fileName 跳转路径(默认跳转至当前页)
* @return void
*/
public function setJumpLink($jumpLink) {
$this->jumpLink = $jumpLink;
}
/**
* 设置当前页
* @param integer $curtPage 当前页码
* @return void
*/
private function getCurtPage() {
$curtPage = isset($_GET[$this->keyPage]) ? intval($_GET[$this->keyPage]) : 1;
$curtPage = max(1, $curtPage);
$curtPage = min($curtPage, $this->getPageNum());
return $curtPage;
}
/**
* 设置每页显示记录数
* @param int $pageSize
* @return void
*/
private function setPageSize($pageSize) {
if(!empty($pageSize)) {
$this->pageSize = max(1, intval($pageSize));
}
}
/**
* 返回跳转URL
* @param int $pageVal 转至的页数
* @return string(url)
*/
private function getJumpLink($pageVal) {
$pageVal = max(0, intval($pageVal));
if (preg_match('#(\.htm(l?))$#i', $this->jumpLink)) {
$fary = explode('.', $this->jumpLink);
$fary[count($fary)-2] .= $pageVal;
return implode('.', $fary);
}
if (!empty($_SERVER['QUERY_STRING'])) {
$qs = $_SERVER['QUERY_STRING']. '&';
$qs = preg_replace('#'.$this->keyPage.'=[^\&]*\&?#i', '', $qs);
} else {
$qs = '';
}
return $this->jumpLink. '?' .$qs.$this->keyPage. '=' .$pageVal;
}
/**
* 得到总页数
* @return integer
*/
public function getPageNum() {
return ceil($this->totalItems / $this->pageSize);
}
/**
* 得到格式化的分页信息
* @return string
*/
public function getHtmlInfoPage() {
$str = $this->parseLang['INFO_PAGE'];
$str = str_replace('{TOTAL_PAGE}', $this->getPageNum(), $str);
$str = str_replace('{CURRENT_PAGE}', $this->getCurtPage(), $str);
$str = str_replace('{TOTALITEM}' , $this->totalItems, $str);
return $str;
}
/**
* 得到格式化的页码标号
* @param $trim 为分页标号之间间隔字符，默认为：空格
* @return string
*/
public function getHtmlPageList($trim_l = ' ',$trim_r = ' ') {
$str = '';
//前$codeNum/2页
for($i=($this->getCurtPage()-($this->codeNum/2)); $i<$this->getCurtPage(); $i++) {
if ($i < 1) continue;
$str .= $trim_l. '<a href="' .$this->getJumpLink($i). '">' .$i. '</a>' .$trim_r;
}
$str .= '<a class="selected active">' .$trim_l.$i.$trim_r. '</a>'; //当前页
//后$codeNum/2-1页
for ($i=($this->getCurtPage()+1); $i<($this->getCurtPage()+($this->codeNum/2)); $i++) {
if($i > $this->getPageNum()) break;
$str .= $trim_l. '<a href="' .$this->getJumpLink($i). '">' .$i. '</a>' .$trim_r;
}
return $str;
}
/**
* 得到格式化的第一页
* @return string(html)
*/
public function getHtmlFirstPage() {
if($this->getCurtPage() <= 1) {
//return ' ' .$this->parseLang['FIRST_PAGE']. ' ';
return ' ';
}
return ' <a href="' . $this->getJumpLink(1). '">' .$this->parseLang['FIRST_PAGE'] . '</a> ';
}
/**
* 得到格式化的最后页
* @return string
*/
public function getHtmlFinallyPage() {
if($this->getCurtPage() >= $this->getPageNum()) {
//return ' ' .$this->parseLang['FINALLY_PAGE']. ' ';
return ' ';
}
return ' <a href="' .$this->getJumpLink($this->getPageNum()). '">' .$this->parseLang['FINALLY_PAGE']. '</a> ';
}
/**
* 得到格式化后的上一页
* @return string
*/
public function getHtmlLastPage() {
if ($this->getCurtPage() <= 1) {
//return ' ' .$this->parseLang['LAST_PAGE']. ' ';
return ' ';
}
return ' <a href="' .$this->getJumpLink($this->getCurtPage()-1). '">' .$this->parseLang['LAST_PAGE']. '</a> ';
}
/**
* 得到格式化的下一页
* @return string
*/
public function getHtmlNextPage() {
if($this->getCurtPage() >= $this->getPageNum()) {
//return ' ' .$this->parseLang['NEXT_PAGE']. ' ';
return ' ';
}
return ' <a href="' .$this->getJumpLink($this->getCurtPage()+1). '">' .$this->parseLang['NEXT_PAGE']. '</a> ';
}
/**
* 得到格式化的以下拉菜单显示
* @return string
*/
public function getHtmlSelectPage($html='input') {
$str = $this->parseLang['JUMP']. '<select name="' .$this->keyPage. '" ';
$str.= 'onChange="javascript:window.location.href=this.options[selectedIndex].value">'.$this->parseLang['PAGE'];
$s = '';
for ($i=1; $i<=$this->getPageNum(); $i++) {
$s = ($i == $this->getCurtPage()) ? ' selected' : '';
$str .= '<option value="' .$this->getJumpLink($i). '"' .$s.'>' .$i. '</option>';
}
$str .= '</select>'.$this->parseLang['PAGE'];
$str2 = '<label>'.$this->parseLang['FROM'].'<input id="_pTagInput_" type="text" value="'.$this->getCurtPage().'" />';
$str2.= $this->parseLang['PAGE'].'</label>';
$str2.= '<label><button onclick="window.location.href=\''.$this->getJumpLink(0).'\'+document.getElementById(\'_pTagInput_\').value">';
$str2.= $this->parseLang['BUTTON'].'</button></label>';
return $html == 'select' ? $str : $str2;
}
/**
* 返回用于外部调用的当前URL
*/
public function getArgv() {
return '&' .$this->keyPage. '=' .$this->getCurtPage();
}
/**
* 返回SQL语句(数据库查询)
* @return string
*/
public function getSqlLimit() {
return ' LIMIT ' .max(0, intval($this->getCurtPage() * $this->pageSize - $this->pageSize)). ',' .$this->pageSize;
}
/**
* 返回分页计算参数 start
* @return int
*/
public function getLimitStart() {
return max(0, intval($this->getCurtPage() * $this->pageSize - $this->pageSize));
}
/**
* 返回分页计算参数 offset
* @return int
*/
public function getLimitOffset() {
return $this->pageSize;
}
}
.meneame {PADDING-RIGHT: 3px; PADDING-LEFT: 3px; FONT-SIZE: 80%; PADDING-BOTTOM: 3px; MARGIN: 3px; COLOR: #ff6500; PADDING-TOP: 3px; TEXT-ALIGN: center; clear:both;}
.meneame A {
BORDER-RIGHT: #ff9600 1px solid; PADDING-RIGHT: 7px; BACKGROUND-POSITION: 50% bottom; BORDER-TOP: #ff9600 1px solid; PADDING-LEFT: 7px; BACKGROUND-IMAGE: url(meneame.jpg); PADDING-BOTTOM: 5px; BORDER-LEFT: #ff9600 1px solid; COLOR: #ff6500; MARGIN-RIGHT: 3px; PADDING-TOP: 5px; BORDER-BOTTOM: #ff9600 1px solid; TEXT-DECORATION: none
}
.meneame A:hover {
BORDER-RIGHT: #ff9600 1px solid; BORDER-TOP: #ff9600 1px solid; BACKGROUND-IMAGE: none; BORDER-LEFT: #ff9600 1px solid; COLOR: #ff6500; BORDER-BOTTOM: #ff9600 1px solid; BACKGROUND-COLOR: #ffc794
}
.meneame A:active {
BORDER-RIGHT: #ff9600 1px solid; BORDER-TOP: #ff9600 1px solid; BACKGROUND-IMAGE: none; BORDER-LEFT: #ff9600 1px solid; COLOR: #ff6500; BORDER-BOTTOM: #ff9600 1px solid; BACKGROUND-COLOR: #ffc794
}
.meneame SPAN.current,.selected {
BORDER-RIGHT: #ff6500 1px solid; PADDING-RIGHT: 7px; BORDER-TOP: #ff6500 1px solid; PADDING-LEFT: 7px; FONT-WEIGHT: bold; PADDING-BOTTOM: 5px; BORDER-LEFT: #ff6500 1px solid; COLOR: #ff6500; MARGIN-RIGHT: 3px; PADDING-TOP: 5px; BORDER-BOTTOM: #ff6500 1px solid; BACKGROUND-COLOR: #ffbe94
}
.meneame SPAN.disabled {
BORDER-RIGHT: #ffe3c6 1px solid; PADDING-RIGHT: 7px; BORDER-TOP: #ffe3c6 1px solid; PADDING-LEFT: 7px; PADDING-BOTTOM: 5px; BORDER-LEFT: #ffe3c6 1px solid; COLOR: #ffe3c6; MARGIN-RIGHT: 3px; PADDING-TOP: 5px; BORDER-BOTTOM: #ffe3c6 1px solid
}
