二个php分页程序代码-PHP源码

class PageView{
/**页码**/
public $pageNo = 1;
/**页大小**/
public $pageSize = 20;
/**共多少页**/
public $pageCount = 0;
/**总记录数**/
public $totalNum = 0;
/**偏移量,当前页起始行**/
public $offSet = 0;
/**每页数据**/
public $pageData = array();

/**是否有上一页**/
public $hasPrePage = true;
/**是否有下一页**/
public $hasNextPage = true;

public $pageNoList = array();

public $jsFunction ='jsFunction';
/**
*
* @param unknown_type $count 总行数
* @param unknown_type $size 分页大小
* @param unknown_type $string
*/
public function __construct($count=0, $size=20,$pageNo=1,$pageData =array(),$jsFunction='jsFunction'){

$this->totalNum = $count;//总记录数
$this->pageSize = $size;//每页大小
$this->pageNo = $pageNo;
//计算总页数
$this->pageCount = ceil($this->totalNum/$this->pageSize);
$this->pageCount = ($this->pageCount<=0)?1:$this->pageCount;
//检查pageNo
$this->pageNo = $this->pageNo == 0 ? 1 : $this->pageNo;
$this->pageNo = $this->pageNo > $this->pageCount? $this->pageCount : $this->pageNo;

//计算偏移
$this->offset = ( $this->pageNo - 1 ) * $this->pageSize;
//计算是否有上一页下一页
$this->hasPrePage = $this->pageNo == 1 ?false:true;

$this->hasNextPage = $this->pageNo >= $this->pageCount ?false:true;

$this->pageData = $pageData;
$this->jsFunction = $jsFunction;

}
/**
* 分页算法
* @return
*/
private function generatePageList(){
$pageList = array();
if($this->pageCount <= 9){
for($i=0;$i<$this->pageCount;$i++){
array_push($pageList,$i+1);
}
}else{
if($this->pageNo <= 4){
for($i=0;$i<5;$i++){
array_push($pageList,$i+1);
}
array_push($pageList,-1);
array_push($pageList,$this->pageCount);

}else if($this->pageNo > $this->pageCount - 4){
array_push($pageList,1);

array_push($pageList,-1);
for($i=5;$i>0;$i--){
array_push($pageList,$this->pageCount - $i+1);
}
}else if($this->pageNo > 4 && $this->pageNo <= $this->pageCount - 4){
array_push($pageList,1);
array_push($pageList,-1);

array_push($pageList,$this->pageNo -2);
array_push($pageList,$this->pageNo -1);
array_push($pageList,$this->pageNo);
array_push($pageList,$this->pageNo + 1);
array_push($pageList,$this->pageNo + 2);

array_push($pageList,-1);
array_push($pageList,$this->pageCount);

}
}
return $pageList;
}

/***
* 创建分页控件
* @param
* @return String
*/
public function echoPageAsDiv(){
$pageList = $this->generatePageList();

$pageString ="

";

if(!empty($pageList)){
if($this->pageCount >1){
if($this->hasPrePage){
$pageString = $pageString ."jsFunction . "(" . ($this->pageNo-1) . ")">上一页";
}
foreach ($pageList as $k=>$p){
if($this->pageNo == $p){
$pageString = $pageString ."" . $this->pageNo . "";
continue;
}
if($p == -1){
$pageString = $pageString ."...";
continue;
}
$pageString = $pageString ."jsFunction . "(" . $p . ")">" . $p . "";
}

if($this->hasNextPage){
$pageString = $pageString ."jsFunction . "(" . ($this->pageNo+1) . ")">下一页";
}

}
}
$pageString = $pageString .("

?>

$pageNo = $_GET['pageNo'];
if(empty($pageNo)){
$pageNo = 1;
}
//分页数据
$pageData = News::getNewsPage($pageNo,$pageSize);
//取得总行数
$count = News::getNewsCount();
//创建分页器
$p = new PageView($count['0']['TOTAL'],$pageSize,$pageNo,$pageData);
　　　　 //生成页码
$pageViewString = $p->echoPageAsDiv();

class SubPages{

private $each_disNums;//每页显示的条目数
private $nums;//总条目数
private $current_page;//当前被选中的页
private $sub_pages;//每次显示的页数
private $pageNums;//总页数
private $page_array = array();//用来构造分页的数组
private $subPage_link;//每个分页的链接
private $subPage_type;//显示分页的类型
/*
__construct是SubPages的构造函数，用来在创建类的时候自动运行.
@$each_disNums 每页显示的条目数
@nums 总条目数
@current_num 当前被选中的页
@sub_pages 每次显示的页数
@subPage_link 每个分页的链接
@subPage_type 显示分页的类型

当@subPage_type=1的时候为普通分页模式
example： 共4523条记录,每页显示10条,当前第1/453页 [首页] [上页] [下页] [尾页]
当@subPage_type=2的时候为经典分页样式
example： 当前第1/453页 [首页] [上页] 1 2 3 4 5 6 7 8 9 10 [下页] [尾页]
*/
function __construct($each_disNums,$nums,$current_page,$sub_pages,$subPage_link,$subPage_type){
$this->each_disNums=intval($each_disNums);
$this->nums=intval($nums);
if(!$current_page){
$this->current_page=1;
}else{
$this->current_page=intval($current_page);
}
$this->sub_pages=intval($sub_pages);
$this->pageNums=ceil($nums/$each_disNums);
$this->subPage_link=$subPage_link;
$this->show_SubPages($subPage_type);
//echo $this->pageNums."--".$this->sub_pages;
}


/*
__destruct析构函数，当类不在使用的时候调用，该函数用来释放资源。
*/
function __destruct(){
unset($each_disNums);
unset($nums);
unset($current_page);
unset($sub_pages);
unset($pageNums);
unset($page_array);
unset($subPage_link);
unset($subPage_type);
}

/*
show_SubPages函数用在构造函数里面。而且用来判断显示什么样子的分页
*/
function show_SubPages($subPage_type){
if($subPage_type == 1){
$this->subPageCss1();
}elseif ($subPage_type == 2){
$this->subPageCss2();
}
}


/*
用来给建立分页的数组初始化的函数。
*/
function initArray(){
for($i=0;$i<$this->sub_pages;$i++){
$this->page_array[$i]=$i;
}
return $this->page_array;
}


/*
construct_num_Page该函数使用来构造显示的条目
即使：[1][2][3][4][5][6][7][8][9][10]
*/
function construct_num_Page(){
if($this->pageNums <$this->sub_pages){
$current_array=array();
for($i=0;$i<$this->pageNums;$i++){
$current_array[$i]=$i+1;
}
}else{
$current_array=$this->initArray();
if($this->current_page <= 3){
for($i=0;$i $current_array[$i]=$i+1;
}
}elseif ($this->current_page <= $this->pageNums && $this->current_page > $this->pageNums - $this->sub_pages + 1 ){
for($i=0;$i $current_array[$i]=($this->pageNums)-($this->sub_pages)+1+$i;
}
}else{
for($i=0;$i $current_array[$i]=$this->current_page-2+$i;
}
}
}

return $current_array;
}

/*
构造普通模式的分页
共4523条记录,每页显示10条,当前第1/453页 [首页] [上页] [下页] [尾页]
*/
function subPageCss1(){
$subPageCss1Str="";
$subPageCss1Str.="共".$this->nums."条记录，";
$subPageCss1Str.="每页显示".$this->each_disNums."条，";
$subPageCss1Str.="当前第".$this->current_page."/".$this->pageNums."页 ";
if($this->current_page > 1){
$firstPageUrl=$this->subPage_link."1";
$prewPageUrl=$this->subPage_link.($this->current_page-1);
$subPageCss1Str.="[首页] ";
$subPageCss1Str.="[上一页] ";
}else {
$subPageCss1Str.="[首页] ";
$subPageCss1Str.="[上一页] ";
}

if($this->current_page <$this->pageNums){
$lastPageUrl=$this->subPage_link.$this->pageNums;
$nextPageUrl=$this->subPage_link.($this->current_page+1);
$subPageCss1Str.=" [下一页] ";
$subPageCss1Str.="[尾页] ";
}else {
$subPageCss1Str.="[下一页] ";
$subPageCss1Str.="[尾页] ";
}

echo $subPageCss1Str;

}


/*
构造经典模式的分页
当前第1/453页 [首页] [上页] 1 2 3 4 5 6 7 8 9 10 [下页] [尾页]
*/
function subPageCss2(){
$subPageCss2Str="";
$subPageCss2Str.="当前第".$this->current_page."/".$this->pageNums."页 ";


if($this->current_page > 1){
$firstPageUrl=$this->subPage_link."1";
$prewPageUrl=$this->subPage_link.($this->current_page-1);
$subPageCss2Str.="[首页] ";
$subPageCss2Str.="[上一页] ";
}else {
$subPageCss2Str.="[首页] ";
$subPageCss2Str.="[上一页] ";
}

$a=$this->construct_num_Page();
for($i=0;$i $s=$a[$i];
if($s == $this->current_page ){
$subPageCss2Str.="[".$s."]";
}else{
$url=$this->subPage_link.$s;
$subPageCss2Str.="[".$s."]";
}
}

if($this->current_page <$this->pageNums){
$lastPageUrl=$this->subPage_link.$this->pageNums;
$nextPageUrl=$this->subPage_link.($this->current_page+1);
$subPageCss2Str.=" [下一页] ";
$subPageCss2Str.="[尾页] ";
}else {
$subPageCss2Str.="[下一页] ";
$subPageCss2Str.="[尾页] ";
}
echo $subPageCss2Str;
}
}
?>

require_once("SubPages.php");
//每页显示的条数
$page_size=20;
//总条目数
$nums=1024;
//每次显示的页数
$sub_pages=10;
//得到当前是第几页
$pageCurrent=$_GET["p"];
//if(!$pageCurrent) $pageCurrent=1;

$subPages=new SubPages($page_size,$nums,$pageCurrent,$sub_pages,"test.php?p=",2);
?>