search
HomeBackend DevelopmentPHP Tutorial我如何把php得到的数据进行分类呢?

<?php$con = mysql_connect("localhost","root","123");if (!$con)  {  die('Could not connect: ' . mysql_error());  }mysql_select_db("task", $con);mysql_query("set names utf8");$result = mysql_query("SELECT * FROM tesk limit 0,10 ");echo "<table border='1'><tr><th>time</th><th>id</th><th>name</th><th>task</th><th>remark</th></tr>";while($row = mysql_fetch_array($result)){  echo "<tr>";  echo "<td>" . $row['date'] . "</td>";  echo "<td>" . $row['id'] . "</td>";  echo "<td>" . $row['name'] . "</td>";  echo "<td>" . $row['task'] . "</td>";   echo "<td>" . $row['remark'] . "</td>";  echo "</tr>";  }echo "</table>";<a herf=“”>下一页</a> mysql_close($con);?>

新手,求各位同仁指教


回复讨论(解决方案)

你可以从数据结构上进行分类,你现在的表字段是 日期,ID,姓名,工作,备注,  你可以再加一个分类,然后在做数据添加的时候,就要先把这条数据归于哪一类做好,这样以后你要获取哪一类数据就很容易了。

你可以从数据结构上进行分类,你现在的表字段是 日期,ID,姓名,工作,备注,  你可以再加一个分类,然后在做数据添加的时候,就要先把这条数据归于哪一类做好,这样以后你要获取哪一类数据就很容易了。


可是我要实现的是页面的分页啊,比如上一页,下一页

究竟是 分类,还是 分页 呢?

究竟是 分类,还是 分页 呢?


分页,大神,求源码

我以前写的分页,现在去看已经看不明白了。代码供参考:

class PageTool{	protected $total=0;	protected $perpage=10;	protected $page=1;	/*构造函数的参数分别为商品总条目数,每页多少条目,当前页*/	public function __construct($total,$page=false,$perpage=false){		$this->total = $total;		if($perpage){			$this->perpage = $perpage;		}		if($page){			$this->page = $page;		}	}	public function show(){		$cnt = ceil($this->total/$this->perpage);//$cnt表示一共需要多少页		$uri = $_SERVER['REQUEST_URI']; //从地址栏获取URL		$parse = parse_url($uri); //将获取的URL变成特定数组		//print_r($parse);exit;		$param = array();		if(isset($parse['query'])){ //如果地址栏传了参数(也就是url?之后的字符串),则获取参数放入$param数组中			parse_str($parse['query'],$param);		}			/*不管地址栏有没有传page参数,都要把page从$param中剔除		因为page参数是需要计算出来的,不能定死*/		unset($param['page']);		$url = $parse['path'].'?';		if(!empty($param)){			$param = http_build_query($param);  //把数组$param再变成字符串,这一次已经剔除了page参数			$url = $url.$param.'&'; //重新拼凑$url,最后的&符号用于连接计算出的page		}		/*			关键部分:计算页码导航			此处逻辑有点复杂,多思考下		*/		$nav = array(); //用于存放最终地址栏链接		$nav[0] = '<span class="page_now">'.$this->page.'</span>'; //把当前地址栏的page参数放入$nav数组		for($left=$this->page-1,$right=$this->page+1;		($left>=1||$right<=$cnt)&&count($nav)<=5;){			if($left>=1){				array_unshift($nav, '<a href="'.$url.'page='.$left.'">'.'['.$left.']'.'</a>');				$left-=1;			}			if($right<=$cnt){				array_push($nav, '<a href="'.$url.'page='.$right.'">'.'['.$right.']'.'</a>');				$right+=1;			}		}		return implode('', $nav);	}}/*	测试分页类效果	$page = isset($_GET['page'])?$_GET['page']:1;	$pagetool = new PageTool(20,$page,6);	echo $pagetool->show();*/

https://www.baidu.com/s?wd=php%E5%88%86%E9%A1%B5%E4%BB%A3%E7%A0%81&rsv_spt=1&issp=1&f=3&rsv_bp=0&rsv_idx=2&ie=utf-8&tn=monline_3_dg&rsv_enter=1&rsv_sug3=3&rsv_sug1=3&rsv_t=c733Uq%2FwiMQsWTsHbTpKlsGi28hrzNSMtk%2FPEGjmC0WhKU90JnZi4iR38%2FcmUPYPizwg&rsv_sug2=0&prefixsug=PHP%E5%88%86%E9%A1%B5&rsp=0&inputT=4321&rsv_sug4=5144

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
How to calculate the total number of elements in a PHP multidimensional array?How to calculate the total number of elements in a PHP multidimensional array?May 15, 2025 pm 09:00 PM

Calculating the total number of elements in a PHP multidimensional array can be done using recursive or iterative methods. 1. The recursive method counts by traversing the array and recursively processing nested arrays. 2. The iterative method uses the stack to simulate recursion to avoid depth problems. 3. The array_walk_recursive function can also be implemented, but it requires manual counting.

What are the characteristics of do-while loops in PHP?What are the characteristics of do-while loops in PHP?May 15, 2025 pm 08:57 PM

In PHP, the characteristic of a do-while loop is to ensure that the loop body is executed at least once, and then decide whether to continue the loop based on the conditions. 1) It executes the loop body before conditional checking, suitable for scenarios where operations need to be performed at least once, such as user input verification and menu systems. 2) However, the syntax of the do-while loop can cause confusion among newbies and may add unnecessary performance overhead.

How to hash strings in PHP?How to hash strings in PHP?May 15, 2025 pm 08:54 PM

Efficient hashing strings in PHP can use the following methods: 1. Use the md5 function for fast hashing, but is not suitable for password storage. 2. Use the sha256 function to improve security. 3. Use the password_hash function to process passwords to provide the highest security and convenience.

How to implement array sliding window in PHP?How to implement array sliding window in PHP?May 15, 2025 pm 08:51 PM

Implementing an array sliding window in PHP can be done by functions slideWindow and slideWindowAverage. 1. Use the slideWindow function to split an array into a fixed-size subarray. 2. Use the slideWindowAverage function to calculate the average value in each window. 3. For real-time data streams, asynchronous processing and outlier detection can be used using ReactPHP.

How to use the __clone method in PHP?How to use the __clone method in PHP?May 15, 2025 pm 08:48 PM

The __clone method in PHP is used to perform custom operations when object cloning. When cloning an object using the clone keyword, if the object has a __clone method, the method will be automatically called, allowing customized processing during the cloning process, such as resetting the reference type attribute to ensure the independence of the cloned object.

How to use goto statements in PHP?How to use goto statements in PHP?May 15, 2025 pm 08:45 PM

In PHP, goto statements are used to unconditionally jump to specific tags in the program. 1) It can simplify the processing of complex nested loops or conditional statements, but 2) Using goto may make the code difficult to understand and maintain, and 3) It is recommended to give priority to the use of structured control statements. Overall, goto should be used with caution and best practices are followed to ensure the readability and maintainability of the code.

How to implement data statistics in PHP?How to implement data statistics in PHP?May 15, 2025 pm 08:42 PM

In PHP, data statistics can be achieved by using built-in functions, custom functions, and third-party libraries. 1) Use built-in functions such as array_sum() and count() to perform basic statistics. 2) Write custom functions to calculate complex statistics such as medians. 3) Use the PHP-ML library to perform advanced statistical analysis. Through these methods, data statistics can be performed efficiently.

How to use anonymous functions in PHP?How to use anonymous functions in PHP?May 15, 2025 pm 08:39 PM

Yes, anonymous functions in PHP refer to functions without names. They can be passed as parameters to other functions and as return values ​​of functions, making the code more flexible and efficient. When using anonymous functions, you need to pay attention to scope and performance issues.

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 Article

Hot Tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools