经典php 分页类- php通用分页类

原创2016-06-08 17:28:12612

class My_Lib_pages{

private $each_disNums;//每页显示的条目数
private $nums;//总条目数
var $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);
$nums = $nums==0 ? 1: $nums;
$this->nums=intval($nums);
$this->pageNums=ceil($nums/$each_disNums);
$this->current_page=intval($current_page);
$this->current_page= $this->current_page<=0 ? 1: $this->current_page;
$this->current_page= $this->current_page > $this->pageNums ? 1 : $this->current_page;
$this->sub_pages=intval($sub_pages);
$this->subPage_link=$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] ";
}

return $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.="<<";
}else {
$subPageCss2Str.="首页";
$subPageCss2Str.="<<";
}

$a=$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.=" >> ";
$subPageCss2Str.="尾页 ";
}else {
$subPageCss2Str.=">>";
$subPageCss2Str.="尾页";
}
return $subPageCss2Str;
}
}
?>