简单,方便,功能全的php分页类

分页类代码 <?php
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 < count ( $current_array ); $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 < count ( $current_array ); $i ++){
$current_array [ $i ]=( $this ->pageNums)-( $this ->sub_pages)+1+ $i ;
}
} else {
for ( $i =0; $i < count ( $current_array ); $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);
$subPageCss1Str .= "[<a href='$firstPageUrl'>首页</a>] " ;
$subPageCss1Str .= "[<a href='$prewPageUrl'>上一页</a>] " ;
} 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);
$subPageCss1Str .= " [<a href='$nextPageUrl'>下一页</a>] " ;
$subPageCss1Str .= "[<a href='$lastPageUrl'>尾页</a>] " ;
} 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);
$subPageCss2Str .= "[<a href='$firstPageUrl'>首页</a>] " ;
$subPageCss2Str .= "[<a href='$prewPageUrl'>上一页</a>] " ;
} else {
$subPageCss2Str .= "[首页] " ;
$subPageCss2Str .= "[上一页] " ;
}

$a = $this ->construct_num_Page();
for ( $i =0; $i < count ( $a ); $i ++){
$s = $a [ $i ];
if ( $s == $this ->current_page ){
$subPageCss2Str .= "[<span style='color:red;font-weight:bold;'>" . $s . "</span>]" ;
} else {
$url = $this ->subPage_link. $s ;
$subPageCss2Str .= "[<a href='$url'>" . $s . "</a>]" ;
}
}

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

演示代码:

<?php
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);
?>