php动态分页类
2024-04-19 12:33:27
<?php /**
* 页面名称：cls_page.php
*/
class Page {
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 $subPage_link; //每个分页的链接 /**
*
* __construct是SubPages的构造函数，用来在创建类的时候自动运行.
* @$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) {
$this->each_disNums = intval($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 = $subPage_link;
}
/**
* 照顾低版本
*/
/*
function __construct($each_disNums, $nums, $current_page, $sub_pages, $subPage_linke) {
$this->Page($each_disNums, $nums, $current_page, $sub_pages, $subPage_link); }
*/ /*
__destruct析构函数，当类不在使用的时候调用，该函数用来释放资源。
*/
function __destruct() {
unset ($each_disNums);
unset ($nums);
unset ($current_page);
unset ($sub_pages);
unset ($pageNums);
unset ($page_array);
unset ($subPage_link);
} /*
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] ";
} 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);
$subPageCss2Str .= "[<a href='$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] ";
}
return $subPageCss2Str;
}
} ?> <?
class sqldao{
//连接数据库
function conn(){
$dbh=mysql_connect('localhost','username','pass')or die("对不起,数据库连接错误!请稍候再来,或与管理员联系");
mysql_query("set names 'utf8'", $dbh);
mysql_select_db('tableName');
return $dbh;
}
}
?> <?
//以下为测试代码
$sqldao=new sqldao();
$dbh=$sqldao->conn(); $start=($_GET['p']-1)*10;
$que="select utname from renyuan";
$rs=mysql_query($que,$dbh);
$num_all=mysql_num_rows($rs); $rs=mysql_query($que." limit ".$start.",10",$dbh);
$num=mysql_num_rows($rs);
for($i=0;$i<$num;$i++){
$row=mysql_fetch_array($rs);
echo $row['utname']."<br>";
} echo "<hr>";
//测试一下，看看两种不同效果
//$t = new Page(显示条数, 数据总数, 页数, 页数链接个数, '页面链接');
$t = new Page(10, $num_all, $_GET['p'], 10, 'cls_page.php?p=');
echo $t->subPageCss2();
echo "<p>";
echo $t->subPageCss1(); ?>
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