PHP通用分页类page.php[仿google分页]_php实例
page.php
/**
** 通用php分页类。(仿Google样式)
** 只需提供记录总数与每页显示数两个参数。(已附详细使用说明..)
** 无需指定URL,链接由程序生成。方便用于检索结果分页。
** 表单采用GET方法提交,可保证在诸如查询之,删除之类的操作时,不丢失URL参数
**/
class Pager{
//IE地址栏地址
var $url;
//记录总条数
var $countall;
//总页数
var $page;
//分页数字链接
var $thestr;
//首页、上一页链接
var $backstr;
//尾页、下一页链接
var $nextstr;
//当前页码
var $pg;
//每页显示记录数量
var $countlist;
//翻页样式
var $style;
//构造函数,实例化该类的时候自动执行该函数
function Pager($countall,$countlist,$style="page"){
//记录数与每页显示数不能整队时,页数取余后加1
$this->countall = $countall;
$this->countlist = $countlist;
$this->style=$style;
if ($this->countall%$this->countlist!=0){
$this->page=sprintf("%d",$this->countall/$this->countlist)+1;
}else{
$this->page=$this->countall/$this->countlist;
}
$this->pg=$_GET["pg"];
//保证pg在未指定的情况下为从第1页开始
if (!ereg("^[1-9][0-9]*$",$this->pg) || empty($this->pg)){
$this->pg=1;
}
//页码超出最大范围,取最大值
if ($this->pg>$this->page){
$this->pg=$this->page;
}
//得到当前的URL。具体实现请看最底部的函数实体
$this->url = Pager::getUrl();
//替换错误格式的页码为正确页码
if(isset($_GET["pg"]) && $_GET["pg"]!=$this->pg){
$this->url=str_replace("?pg=".$_GET["pg"],"?pg=$this->pg",$this->url);
$this->url=str_replace("&pg=".$_GET["pg"],"&pg=$this->pg",$this->url);
}
//生成12345等数字形式的分页。
if ($this->pagefor ($i=1;$ipage+1;$i++){
$this->thestr=$this->thestr.Pager::makepg($i,$this->pg);
}
}else{
if ($this->pgfor ($i=1;$i$this->thestr=$this->thestr.Pager::makepg($i,$this->pg);
}
}else{
if (6+$this->pgpage){
for ($i=$this->pg-4;$ipg+6;$i++){
$this->thestr=$this->thestr.Pager::makepg($i,$this->pg);
}
}else{
for ($i=$this->pg-4;$ipage+1;$i++){
$this->thestr=$this->thestr.Pager::makepg($i,$this->pg);
}
}
}
}
//生成上页下页等文字链接
$this->backstr = Pager::gotoback($this->pg);
$this->nextstr = Pager::gotonext($this->pg,$this->page);
//echo (" 共".$this->countall." 条,每页".$this->countlist."条,共".$this->page."页".$this->backstr.$this->thestr.$this->nextstr);
}
//生成数字分页的辅助函数
function makepg($i,$pg){
if ($i==$pg){
return " ".$i."";
}else{
return " ".$i."";
}
}
//生成上一页等信息的函数
function gotoback($pg){
if ($pg-1>0){
return $this->gotoback=" 首页 上一页";
}else{
return $this->gotoback="首页 上一页 ";
}
}
//生成下一页等信息的函数
function gotonext($pg,$page){
if ($pg return " 下一页 尾页";
}else{
return " 下一页 尾页";
}
}
//处理url中$pg的方法,用于自动生成pg=x
function replacepg($url,$flag,$i){
if ($flag == 1){
$temp_pg = $this->pg;
return str_replace("pg=".$temp_pg,"pg=".($this->pg+1),$url);
}else if($flag == 2) {
$temp_pg = $this->pg;
return str_replace("pg=".$temp_pg,"pg=".($this->pg-1),$url);
}else if($flag == 3) {
$temp_pg = $this->pg;
return str_replace("pg=".$temp_pg,"pg=1",$url);
}else if($flag == 4){
$temp_pg = $this->pg;
return str_replace("pg=".$temp_pg,"pg=".$this->page,$url);
}else if($flag == 5){
$temp_pg = $this->pg;
return str_replace("pg=".$temp_pg,"pg=".$i,$url);
}else{
return $url;
}
}
//获得当前URL的方法
function getUrl(){
$url="http://".$_SERVER["HTTP_HOST"];
if(isset($_SERVER["REQUEST_URI"])){
$url.=$_SERVER["REQUEST_URI"];
}else{
$url.=$_SERVER["PHP_SELF"];
if(!empty($_SERVER["QUERY_STRING"])){
$url.="?".$_SERVER["QUERY_STRING"];
}
}
//在当前的URL里加入pg=x字样
if (!ereg("(pg=|PG=|pG=|Pg=)", $url)){
if (!strpos($url,"?")){
$url = $url."?pg=1";
}else{
$url = $url."&pg=1";
}
}
return $url;
}
}
?>

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
