PHP分页

Jun 21, 2016 am 08:48 AM
index php

今天在工作之余写的一段PHP分页处理脚本,欢迎拍砖!!! 显示页面 index.php

<?php 
		require_once 'include/showbbsProcess.php';
		require_once 'include/showbbs_fun.php';		
		@$connectmysql=new connectMysql();
		
		if (empty($_GET['CurrentPageID'])){
			$CurrentPageID=1;//当前是第几页
		}else {
			$CurrentPageID=$_GET['CurrentPageID'];
		}
		
		$PageSize=5;
		echo showCenter($CurrentPageID, $PageSize, $connectmysql);
		?>
Copy after login

分页处理函数 showbbsProcess.php
<?php
function showCenter($CurrentPageID,$PageSize=5,$connectmysql){
	$arr=showbbs($PageSize, $CurrentPageID, $connectmysql);
	foreach ($arr as $values){
		for ($i=0;$i<count($arr);$i++){
			echo ''.$arr[$i]['title'].''.' '.'<span style="float:right;font-size:12px;">作者:'.$arr[$i]['poster'].' '.'发布时间:'.$arr[$i]['posted'].'</span><br/><hr />';
			//如果遍历完$arr数组里的所以元素,即$i($i从0开始)等于数组的元素个数减一,则跳出2层循环(for循环和foreach循环)
			if ($i==(count($arr)-1))
				break 2;
		}
	}
	
	$RowCount=getRowCount($connectmysql);//一共有多少条记录
	
	$PageCount=ceil($RowCount/$PageSize);//共有几页,ceil()函数进一取整
	
	echo '帖子统计:'.$RowCount.'条'.' '.'共有'.$PageCount.'页 ';
	
	//当为第一页时不输出“上一页”
	if ($CurrentPageID != 1){
		echo "上一页";
	}
	
	//向前跳页
	if ($CurrentPageID > 2){
		echo " <<< ";
	}
	
	//输出详细的页数,如:【1】
	for ($j=1;$j<=$PageCount;$j++){
		echo "[$j]";
	}
	
	//向后跳页
	if ($CurrentPageID <= ($PageCount-2)){
		echo " >>> ";
	}
	
	//当为最后一页时不输出“下一页”
	if ($CurrentPageID != $PageCount){
		echo "下一页";
	}
	
	$connectmysql->closeConn();
}
Copy after login

与数据库沟通的函数 showbbs_fun.php
<?php
require_once '/class/connectMysql.php';

//该函数用来获取数据库中的数据并返回一个二维数组
function showbbs($PageSize,$CurrentPageID,$connectmysql){
	$a=($CurrentPageID - 1)*$PageSize;
	$sql="select * from db_content limit $a,$PageSize";
	$arr1=$connectmysql->getRowsArray($sql);
	return $arr1;
}

//该函数用来查询数据库的表的行数
function getRowCount($connectmysql){
	$sql="select * from db_content";
	$num=$connectmysql->getRowsNum($sql);
	return $num;
}
Copy after login

数据库类 connectMysql.php
<?php
/***
 * 这个类用于处理数据库连接相关操作
 */
class connectMysql{
	private $host='localhost';
	private $username='root';
	private $password='szy19900316';
	private $dbname='db_caomei';
	private $conn='';//数据库连接资源
	private $result='';//查询的结果
	private $resultArray;//将查询的结果输出为一个单条记录的数组
	private $rowsArray=array();//含有多条记录的二维数组
	private $rowsNum=0;//返回的结果数
	
	function __construct(){
	}
	
	//连接数据库
	function conndb(){
		$this->conn=mysql_connect($this->host,$this->username,$this->password);
		@mysql_select_db($this->dbname,$this->conn);
		mysql_query('set names utf-8');
	}
	
	//查询结果
	function getResult($sql){
		if ($this->conn==''){
			$this->conndb();
		}
		$this->result=mysql_query($sql,$this->conn);
	}
	
	//返回查询的记录数
	function getRowsNum($sql){
		$this->getResult($sql);
		$num_rows=mysql_num_rows($this->result);
		if (mysql_errno()==0){
			return $num_rows;
		}else {
			return '';
		}
	}
	
	//将结果输出为一个单条记录数组并返回
	function getArray($sql){
		$this->getResult($sql);
		if (mysql_errno()==0){
			$this->resultArray=mysql_fetch_array($this->result,MYSQL_ASSOC);//得到关联数组
			return $this->resultArray;
		}else {
			return '';
		}
	}
	
	//返回一个含有多条记录的二维数组
	function getRowsArray($sql){
		$this->getResult($sql);
		if (mysql_errno()==0){
			while ($row=mysql_fetch_array($this->result,MYSQL_ASSOC)){
				$this->rowsArray[]=$row;
			}
			return $this->rowsArray;
			//print_r($this->rowsArray);exit;
		}else {
			return '';
		}
	}

	//更新、添加、删除
	function uidresult($sql){
		if ($this->conn==''){
			$this->conndb();
		}
		//echo $sql;
		//exit;
		@mysql_query($sql);
		$this->rowsNum=@mysql_affected_rows();
		if (mysql_errno()==0){
			return $this->rowsNum;
		}else {
			return '';
		}
	}
	
	//释放结果集
	function freeResult(){
		mysql_free_result($this->result);
		$this->rowsNum=0;
		$this->rowsArray='';
		$this->resultArray='';
	}
	
	//关闭数据库
	function closeConn(){
		$this->freeResult();
		mysql_close($this->conn);
		$this->conn='';
	}
}
Copy after login



Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

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

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

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

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

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,

PHP Program to Count Vowels in a String PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

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

Explain late static binding in PHP (static::). Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

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.

How do you parse and process HTML/XML in PHP? How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

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

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

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.

PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

See all articles