search
HomeBackend DevelopmentPHP Tutorial为什么我的PHP翻页不能翻到下一页呀求教

我定义了一个类来输出的  下面是类属性...最后是搜索页

include("script/conn.php");    class Page{        private $page;	//当前页码        private $page_num;	//数据总共分多少页显示        private $page_size;	//每页显示的数据条数        private $sql;	//查询的SQL语句        private $limit;	//查询语句后面的limit控制语句	private $total_Num;	//总记录数        public function __construct($sql='',$page_size=3){            $result = mysql_query($sql);            $this->total_Num = mysql_num_rows($result);            $this->page_size = $page_size;            $this->page_num = ceil($this->total_Num / $page_size);	//计算总页数            $this->sql = $sql;            $temp = (isset($_GET["page"]) ? $_GET["page"] : 1);	//获取当前页数            $this->setpage($temp);            $this->showpage();            $this->showFoot();        }        private function showpage(){            $this->limit = " LIMIT ".(($this->page - 1)* $this->page_size).",".$this->page_size;	//limit语句            $result = mysql_query($this->sql.$this->limit);            if (!$result){	//判断结果是否存在                if ($this->page_num > 0){	//如果不存在且页数大于0                    echo "查询出错"."<br>";                }else{                    echo "无数据"."<br>";                }                return;            }            $cols = mysql_num_rows($result);            while($row = mysql_fetch_array($result)){				echo "<img  src="/static/imghwm/default1.png"  data-src=".$row['Image']."  class="lazy"  Image']." / alt="为什么我的PHP翻页不能翻到下一页呀求教" >";				echo "<br/>";            }        }        private function setpage($page){                if($page < 1){                    $page = 1;                }                else if($page > $this->page_num){                    $page = $this->page_num;                }                    $this->page = $page;        }        private function showFoot(){			echo "<br/>";            echo "<a href='?page=1'>首页</a>丨";            echo "<a href='?page=".($this->page - 1)."'>上一页</a>丨";            echo "<a href='?page=".($this->page + 1)."'>下一页</a>丨";            echo "<a href='?page=".$this->page_num."'>尾页</a>丨";			echo "共有".$this->page_num."页丨";			echo "当前第".$this->page."页";        }  }

搜索页的我就给一部分吧。

 //search1.php是搜索页


 
下面是搜索页的PHP
include("c.php");//c.php是上面的PHP程序
$keyword=$_POST['search'];
$sql=mysql_query("select * from didian where name like '%$keyword%'");
$row=@mysql_fetch_object($sql);
if(!$row){
echo "您搜索的信息不存在,请使用类似的关键字进行检索!";
}
if($keyword=='北京'){
$pages = new Page('SELECT * FROM `image_beijing`', 3);
}
代码就这样。。如在类中显示就可以实现翻到下一页,但到搜索页就不能翻页了,只能看到首页,一翻页就什么信息都没,我想问下是什么问题呀。。。求教~~~感谢...


回复讨论(解决方案)

翻页时看看 $this->page 是否有变化

搜页后缀没变……如果在类里面执行就变……你有什么办法吗……

翻页时看看 $this->page 是否有变化

搜索页没变后缀~也没有后缀呢……类里面就变……你有什么办法解决吗?还是说要把2

我问的是 $this->page 是否有变化

我问的是 $this->page 是否有变化

这个……倒没注意~下课回宿舍试下……不过我估计没变化~

我问的是 $this->page 是否有变化

只能看到首页~也就是第一页……点下一页就数据全无~显示当前第一页……没变化……怎么解决?

那我要建议你重写了,把数据库操作部分从类中移去

class Page{  private $page;    //当前页码  private $page_num;    //数据总共分多少页显示  private $page_size;    //每页显示的数据条数  private $sql;    //查询的SQL语句  private $total_Num;    //总记录数  public $limit;    //查询语句后面的limit控制语句  public function __construct($total=100, $page_size=3){    $this->total_Num = $total;    $this->page_size = $page_size;    $this->page_num = ceil($this->total_Num / $page_size);    //计算总页数    $temp = (isset($_GET["page"]) ? $_GET["page"] : 1);    //获取当前页数    $this->setpage($temp);    $this->showpage();    $this->showFoot();  }  private function showpage(){    $this->limit = " LIMIT ".(($this->page - 1)* $this->page_size).",".$this->page_size;    //limit语句  }  private function setpage($page){    if($page < 1){      $page = 1;    }else if($page > $this->page_num){      $page = $this->page_num;    }    $this->page = $page;  }  private function showFoot(){     echo "<br/>";     echo "<a href='?page=1'>首页</a>丨";     echo "<a href='?page=".($this->page - 1)."'>上一页</a>丨";     echo "<a href='?page=".($this->page + 1)."'>下一页</a>丨";     echo "<a href='?page=".$this->page_num."'>尾页</a>丨";     echo "共有".$this->page_num."页丨";     echo "当前第".$this->page."页";  }}

那我要建议你重写了,把数据库操作部分从类中移去

class Page{  private $page;    //当前页码  private $page_num;    //数据总共分多少页显示  private $page_size;    //每页显示的数据条数  private $sql;    //查询的SQL语句  private $total_Num;    //总记录数  public $limit;    //查询语句后面的limit控制语句  public function __construct($total=100, $page_size=3){    $this->total_Num = $total;    $this->page_size = $page_size;    $this->page_num = ceil($this->total_Num / $page_size);    //计算总页数    $temp = (isset($_GET["page"]) ? $_GET["page"] : 1);    //获取当前页数    $this->setpage($temp);    $this->showpage();    $this->showFoot();  }  private function showpage(){    $this->limit = " LIMIT ".(($this->page - 1)* $this->page_size).",".$this->page_size;    //limit语句  }  private function setpage($page){    if($page < 1){      $page = 1;    }else if($page > $this->page_num){      $page = $this->page_num;    }    $this->page = $page;  }  private function showFoot(){     echo "<br/>";     echo "<a href='?page=1'>首页</a>丨";     echo "<a href='?page=".($this->page - 1)."'>上一页</a>丨";     echo "<a href='?page=".($this->page + 1)."'>下一页</a>丨";     echo "<a href='?page=".$this->page_num."'>尾页</a>丨";     echo "共有".$this->page_num."页丨";     echo "当前第".$this->page."页";  }}


为什么$total=100?我没100页呢。。

我问的是 $this->page 是否有变化


及时按你方法写的话我点下一页依然数据全无,我输出的是图片
下一页显示这个search1.php?page=2
首页是这个search1.php没后缀的。。。

我问的是 $this->page 是否有变化


如果按你这样写的话我不知道输出语句$pages = new Page();后面带什么参数好。。

$pages = new Page(总数, 每页数);

$pages = new Page(总数, 每页数);

跳转到第二页还是空白。。。是不是我哪里出错了?
显示代码如下
if($keyword=='桂林'||$keyword=='广西桂林'){	$result=mysql_query("select * from image_guilin limit 3");	while($abc = @mysql_fetch_array($result)){		echo "<img  src="/static/imghwm/default1.png"  data-src=".$abc['Image']."  class="lazy"  Image']." / alt="为什么我的PHP翻页不能翻到下一页呀求教" >";		echo "<br/>";	}	$pages = new Page(8, 3);}

看看 $keyword 是什么

看看 $keyword 是什么


		<form id="search_form" method="post" action="abcdefg.php"> 		<input type="text" id="search" value="城市、景点" onFocus="this.value=''" style="color:#ccc" name="search"/>		<input type="submit" id="s_search" value="搜索" name="Submit" onClick="return check(form)"/>		</form> 

$keyword=$_POST['search'];$sql=mysql_query("select * from didian where name like '%$keyword%'");$row=@mysql_fetch_object($sql);if(!$row){	echo "<font color='red'>您搜索的信息不存在,请使用类似的关键字进行检索!</font>";}
是一个用户输入的搜索框

看看 $keyword 是什么

已经解决了,原来是我参数有问题。。谢谢了。
Statement
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
The Continued Use of PHP: Reasons for Its EnduranceThe Continued Use of PHP: Reasons for Its EnduranceApr 19, 2025 am 12:23 AM

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python: Exploring Their Similarities and DifferencesPHP and Python: Exploring Their Similarities and DifferencesApr 19, 2025 am 12:21 AM

PHP and Python are both high-level programming languages ​​that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP and Python: Different Paradigms ExplainedPHP and Python: Different Paradigms ExplainedApr 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 and Python: A Deep Dive into Their HistoryPHP and Python: A Deep Dive into Their HistoryApr 18, 2025 am 12:25 AM

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

Choosing Between PHP and Python: A GuideChoosing Between PHP and Python: A GuideApr 18, 2025 am 12:24 AM

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP and Frameworks: Modernizing the LanguagePHP and Frameworks: Modernizing the LanguageApr 18, 2025 am 12:14 AM

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHP's Impact: Web Development and BeyondPHP's Impact: Web Development and BeyondApr 18, 2025 am 12:10 AM

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

How does PHP type hinting work, including scalar types, return types, union types, and nullable types?How does PHP type hinting work, including scalar types, return types, union types, and nullable types?Apr 17, 2025 am 12:25 AM

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values ​​and handle functions that may return null values.

See all articles

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

SublimeText3 Linux new version

SublimeText3 Linux new version

SublimeText3 Linux latest version

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

Powerful PHP integrated development environment

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)