PHP 完美分页

Posted 2020-10-07

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首先一个分页类，如下（摘自网络）可拷贝直接使用

<?php
/*
* Created on 2013-12-3
* 分页类
* To change the template for this generated file go to
* Window - Preferences - PHPeclipse - PHP - Code Templates
*/
class Pagination {
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 . " ";
} 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;
}
}
?>

在需要分页的php文件中

include_once ("Pagination.php");
//每页显示的条数
$pageSize = 10;
//总条目数
$pageTotal = $db->get_var("select count(*) from tb");
//每次显示的页数
$sub_pages = 10;
//得到当前是第几页
if (is_array($_GET) && count($_GET) > 0) {
if (isset ($_GET["p"])) { //是否存在"id"的参数
$pageCurrent = $_GET["p"];
}
} else {
$pageCurrent = 1;
}
$goodses = $db->get_results("SELECT g.id,* FROM tb as g INNER JOIN (select id from tb order by updatetime desc limit " . ($pageCurrent -1) * $pageSize . ",10 )as g1 ON g.id=g1.id");

显示分页数据

<?php $subPages = new Pagination($pageSize, $pageTotal, $pageCurrent, $sub_pages, "index.php?p=", 2);?>

效果图：技术分享

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