Home Backend Development PHP Tutorial How to achieve perfect paging in php

How to achieve perfect paging in php

Oct 25, 2017 pm 01:15 PM
php Pagination method

<?php
    /**
        file: page.class.php 
        完美分页类 Page 
    */
    class Page {
        private $total;                            //数据表中总记录数
        private $listRows;                         //每页显示行数
        private $limit;                            //SQL语句使用limit从句,限制获取记录个数
        private $uri;                              //自动获取url的请求地址
        private $pageNum;                          //总页数
        private $page;                            //当前页    
        private $config = array(
                &#39;head&#39; => "条记录", 
                &#39;prev&#39; => "上一页", 
                &#39;next&#39; => "下一页", 
                &#39;first&#39;=> "首页", 
                &#39;last&#39; => "末页"
            );                     
        //在分页信息中显示内容,可以自己通过set()方法设置
        private $listNum = 10;                     //默认分页列表显示的个数
        /**
            构造方法,可以设置分页类的属性
            @param    int    $total        计算分页的总记录数
            @param    int    $listRows    可选的,设置每页需要显示的记录数,默认为25条
            @param    mixed    $query    可选的,为向目标页面传递参数,可以是数组,也可以是查询字符串格式
            @param     bool    $ord    可选的,默认值为true, 页面从第一页开始显示,false则为最后一页
         */
        public function __construct($total, $listRows=25, $query="", $ord=true){
            $this->total = $total;
            $this->listRows = $listRows;
            $this->uri = $this->getUri($query);
            $this->pageNum = ceil($this->total / $this->listRows);
            /*以下判断用来设置当前面*/
            if(!empty($_GET["page"])) {
                $page = $_GET["page"];
            }else{
                if($ord)
                    $page = 1;
                else
                    $page = $this->pageNum;
            }
            if($total > 0) {
                if(preg_match(&#39;/\D/&#39;, $page) ){
                    $this->page = 1;
                }else{
                    $this->page = $page;
                }
            }else{
                $this->page = 0;
            }
            
            $this->limit = "LIMIT ".$this->setLimit();
        }
        /**
            用于设置显示分页的信息,可以进行连贯操作
            @param    string    $param    是成员属性数组config的下标
            @param    string    $value    用于设置config下标对应的元素值
            @return    object            返回本对象自己$this, 用于连惯操作
         */
        function set($param, $value){
            if(array_key_exists($param, $this->config)){
                $this->config[$param] = $value;
            }
            return $this;
        }
        
        /* 不是直接去调用,通过该方法,可以使用在对象外部直接获取私有成员属性limit和page的值 */
        function __get($args){
            if($args == "limit" || $args == "page")
                return $this->$args;
            else
                return null;
        }
        
        /**
            按指定的格式输出分页
            @param    int    0-7的数字分别作为参数,用于自定义输出分页结构和调整结构的顺序,默认输出全部结构
            @return    string    分页信息内容
         */
        function fpage(){
            $arr = func_get_args();
            $html[0] = "<span class=&#39;p1&#39;> 共<b> {$this->total} </b>{$this->config["head"]} </span>";
            $html[1] = " 本页 <b>".$this->disnum()."</b> 条 ";
            $html[2] = " 本页从 <b>{$this->start()}-{$this->end()}</b> 条 ";
            $html[3] = " <b>{$this->page}/{$this->pageNum}</b>页 ";
            $html[4] = $this->firstprev();
            $html[5] = $this->pageList();
            $html[6] = $this->nextlast();
            $html[7] = $this->goPage();
            
            $fpage = &#39;<div style="font:12px \&#39;\5B8B\4F53\&#39;,san-serif;">&#39;;
            if(count($arr) < 1)
                $arr = array(0, 1,2,3,4,5,6,7);
            
            for($i = 0; $i < count($arr); $i++)
                $fpage .= $html[$arr[$i]];
        
            $fpage .= &#39;</div>&#39;;
            return $fpage;
        }
        
        /* 在对象内部使用的私有方法,*/
        private function setLimit(){
            if($this->page > 0)
                return ($this->page-1)*$this->listRows.", {$this->listRows}";
            else
                return 0;
        }
        /* 在对象内部使用的私有方法,用于自动获取访问的当前URL */
        private function getUri($query){    
            $request_uri = $_SERVER["REQUEST_URI"];    
            $url = strstr($request_uri,&#39;?&#39;) ? $request_uri :  $request_uri.&#39;?&#39;;
            
            if(is_array($query))
                $url .= http_build_query($query);
            else if($query != "")
                $url .= "&".trim($query, "?&");
        
            $arr = parse_url($url);
            if(isset($arr["query"])){
                parse_str($arr["query"], $arrs);
                unset($arrs["page"]);
                $url = $arr["path"].&#39;?&#39;.http_build_query($arrs);
            }
            
            if(strstr($url, &#39;?&#39;)) {
                if(substr($url, -1)!=&#39;?&#39;)
                    $url = $url.&#39;&&#39;;
            }else{
                $url = $url.&#39;?&#39;;
            }
            
            return $url;
        }
        /* 在对象内部使用的私有方法,用于获取当前页开始的记录数 */
        private function start(){
            if($this->total == 0)
                return 0;
            else
                return ($this->page-1) * $this->listRows+1;
        }
        /* 在对象内部使用的私有方法,用于获取当前页结束的记录数 */
        private function end(){
            return min($this->page * $this->listRows, $this->total);
        }
        /* 在对象内部使用的私有方法,用于获取上一页和首页的操作信息 */
        private function firstprev(){
            if($this->page > 1) {
                $str = " <a href=&#39;{$this->uri}page=1&#39;>{$this->config["first"]}</a> ";
                $str .= "<a href=&#39;{$this->uri}page=".($this->page-1)."&#39;>{$this->config["prev"]}</a> ";        
                return $str;
            }
        }
    
        /* 在对象内部使用的私有方法,用于获取页数列表信息 */
        private function pageList(){
            $linkPage = " <b>";
            
            $inum = floor($this->listNum/2);
            /*当前页前面的列表 */
            for($i = $inum; $i >= 1; $i--){
                $page = $this->page-$i;
                if($page >= 1)
                    $linkPage .= "<a href=&#39;{$this->uri}page={$page}&#39;>{$page}</a> ";
            }
            /*当前页的信息 */
            if($this->pageNum > 1)
                $linkPage .= "<span style=&#39;padding:1px 2px;background:#BBB;color:white&#39;>{$this->page}</span> ";
            
            /*当前页后面的列表 */
            for($i=1; $i <= $inum; $i++){
                $page = $this->page+$i;
                if($page <= $this->pageNum)
                    $linkPage .= "<a href=&#39;{$this->uri}page={$page}&#39;>{$page}</a> ";
                else
                    break;
            }
            $linkPage .= &#39;</b>&#39;;
            return $linkPage;
        }
        /* 在对象内部使用的私有方法,获取下一页和尾页的操作信息 */
        private function nextlast(){
            if($this->page != $this->pageNum) {
                $str = " <a href=&#39;{$this->uri}page=".($this->page+1)."&#39;>{$this->config["next"]}</a> ";
                $str .= " <a href=&#39;{$this->uri}page=".($this->pageNum)."&#39;>{$this->config["last"]}</a> ";
                return $str;
            }
        }
        /* 在对象内部使用的私有方法,用于显示和处理表单跳转页面 */
        private function goPage(){
                if($this->pageNum > 1) {
                return &#39; <input style="width:20px;height:17px !important;height:18px;border:1px solid #CCCCCC;" type="text" onkeydown="javascript:if(event.keyCode==13){var page=(this.value>&#39;.$this->pageNum.&#39;)?&#39;.$this->pageNum.&#39;:this.value;location=\&#39;&#39;.$this->uri.&#39;page=\&#39;+page+\&#39;\&#39;}" value="&#39;.$this->page.&#39;"><input style="cursor:pointer;width:25px;height:18px;border:1px solid #CCCCCC;" type="button" value="GO" onclick="javascript:var page=(this.previousSibling.value>&#39;.$this->pageNum.&#39;)?&#39;.$this->pageNum.&#39;:this.previousSibling.value;location=\&#39;&#39;.$this->uri.&#39;page=\&#39;+page+\&#39;\&#39;"> &#39;;
            }
        }
        /* 在对象内部使用的私有方法,用于获取本页显示的记录条数 */
        private function disnum(){
            if($this->total > 0){
                return $this->end()-$this->start()+1;
            }else{
                return 0;
            }
        }
    }
Copy after login

The above is the detailed content of How to achieve perfect paging in php. For more information, please follow other related articles on the PHP Chinese website!

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 Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Mandragora: Whispers Of The Witch Tree - How To Unlock The Grappling Hook
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

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)

Hot Topics

Java Tutorial
1670
14
PHP Tutorial
1273
29
C# Tutorial
1256
24
PHP: A Key Language for Web Development PHP: A Key Language for Web Development Apr 13, 2025 am 12:08 AM

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

PHP vs. Python: Understanding the Differences PHP vs. Python: Understanding the Differences Apr 11, 2025 am 12:15 AM

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.

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.

PHP in Action: Real-World Examples and Applications PHP in Action: Real-World Examples and Applications Apr 14, 2025 am 12:19 AM

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

The Enduring Relevance of PHP: Is It Still Alive? The Enduring Relevance of PHP: Is It Still Alive? Apr 14, 2025 am 12:12 AM

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP and Python: Different Paradigms Explained PHP and Python: Different Paradigms Explained Apr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP vs. Other Languages: A Comparison PHP vs. Other Languages: A Comparison Apr 13, 2025 am 12:19 AM

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python: Code Examples and Comparison PHP and Python: Code Examples and Comparison Apr 15, 2025 am 12:07 AM

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

See all articles