Preview of the teaching course on September 10, 2018: How to implement paging query data table and classification query for class encapsulation in PHP

Preview of the teaching content of the third online class of PHP Chinese website on September 10, 2018: 1. Teaching topic: How to use PHP to implement paging query data tables? Encapsulate classification queries into classes to achieve code reuse. For more detailed knowledge points, please pay atten...

藏色散人 2018-09-10 10:02:37 0  0  1282

I refresh the PHP page directly and can delete the numeric fields in the MYSQL database, but cannot delete the letter or URL fields?

I directly refresh the PHP page and can delete the numeric fields in the MYSQL database, but I cannot delete the letter or URL fields.

我就是我 2018-05-14 11:49:58 0  1  2192

java - When writing paging in the SSH framework, the paging class cannot be injected into the service layer

service layer {code...} action layer {code...} {code...} If it is enough to use the new method instead of injection, why?

阿神 2017-06-12 09:24:51 0  3  886

javascript - Is there any good way for vue to return to the previous route and keep the position unchanged?

Pull up to refresh to achieve paging. When there are many pages, click on a page in the list to go to details, and then return to the previous page from the details. The position cannot be changed, and the code will not be refreshed. It is better to use scrollBehavior. I use hash. I have done someth...

滿天的星座 2017-05-16 13:43:04 0  1  576

Can I put various types of information into folders when making a web page using HTML?

As the title says: When making a web page: Can you put pictures, articles, etc. in a folder to facilitate uploading information... ··············································· ··············································· ······································

手机用户-2148901 2020-04-25 12:05:28 0  2  1296

java - Fields in Action cannot be read using struct2 tags

{code...} {code...} {code...} If you don’t use a class to encapsulate the paging fields, it will work. I don’t know what’s wrong?

三叔 2017-06-12 09:25:08 0  1  825

javascript - WeChat h5 page custom button makes it share the page public

1. WeChat h5 page; 2. Custom button group in the page; 3. Button group with sharing function: for example, click to share with friends, share to Moments, has anyone done it like this and provide some ideas and direction. Sorry, it’s similar to a mobile browser that reads articles with a share button...

PHP中文网 2017-07-05 10:49:35 0  2  1182

Need help adding headers and footers on each page when I print a long html table

I have a view with a long HTML table. When I try to print the view, the table is split into pages. Obviously the form breaks and continues to the next page and so on. I want to be able to add headers and footers neatly on every printed page. I've tried using css page break properties like: Internal ...

P粉662802882 2023-12-18 17:46:07 0  1  531

How to automatically generate page numbers 1, 2, 3..., help, urgent

<?php//Paging function//Connect to the database require_once("connect.php");$page = isset($_GET['page'])?intval($_GET['page']):1;//Set The current page number, if not, set it to 1$num=3;//Display 3 pieces of data per page/*First of all, we need to get how much data there is in the datab...

梁温柔 2018-04-18 17:26:51 0  0  1218

PHP refers to the Prince class, and the page prompts that the PDF cannot be loaded.

<?phprequire 'prince.php';//print_r() ;//exit();$prince = new Prince('D:\\prince\\engine\\bin\\prince.exe');//$prince = new Prince('D:\prince\engine\bin\prince.exe');header(

思展软件 2019-10-16 10:57:38 0  2  1151

javascript - About jquery's load() synchronization blocking

Now we need to load the header and footer of the page separately in a main page. The performance of using iframe is not good, and the pure HTML page cannot be used to load the page directly using the include method of PHP. I have not learned how to import templates of frameworks such as React and An...

天蓬老师 2017-05-19 10:20:45 0  3  673

javascript - Does anyone understand the principle of the plug-in that records web browsing?

I don’t know if anyone has used one of these three. Its function is that if you view a webpage and click a plug-in button, you can record the previous webpage content on its own server. What is the principle or function of this? Is there any similar code project? I’m very curious. Please answer.

高洛峰 2017-05-16 13:36:09 0  2  580

php - A certain function can be implemented using a function. Is it necessary to use a class to implement it?

I use PHP. Most of the functions in the project I am writing now are encapsulated into functions. When needed, just require, and then pass the parameters to call the function. I don’t know if this will be bad. Is it still possible? Should we use classes to implement it? Take the homepage of the webs...

滿天的星座 2017-05-31 10:33:09 0  10  808

php - How to add methods to an instance?

{Code...} If there is already an instance of class A, how can this instance also use the test method? What should I do if class A cannot be modified in php and python? If possible, use other packages when writing php before. , you will encounter that the call result returned is already an instance o...

某草草 2017-06-29 10:07:59 0  2  834

Why do PDO and PDOStatement exist at the same time? What are the considerations for this design?

Problem description: We all know that since PHP 5.1.0, PDO has been a standard part of PHP. PDO provides three classes: PDO, PDOStatement and PDOException. Needless to say, the PDOException class depends on its name for function and positioning. It's all clear. So the question comes: why at the same...

我想大声告诉你 2017-05-16 13:11:25 0  3  776

How to add a course to latest posts on WordPress home page?

I'm using the following function in WordPress to display the latest three posts on the home page. Is it possible to add class="latest-posts-right" to the last div so that I can give it another style? How can I do this? <?php/*Showlatestpostsonhomepage*/functionlatest_post(){$args=array(...

P粉073857911 2024-03-21 23:09:34 0  1  384

JS jump to PHP page stuck

The JS jump to other PHP pages is stuck. I tested it and found that the empty PHP file can be accessed. There must be something wrong with the PHP code I was accessing. I can't jump with the JS code, but I can use the PHP header. It jumps normally, which is really weird. I would like to ask how to w...

按键盘手指磨破皮 2017-08-01 14:18:16 0  2  1478

java - Mybatis database multi-table related paging problem

For example: there are two entity classes User and Address {code...} Database: {code...} Mybatis mapping configuration: {code...} The relationship between users and addresses is: one user has multiple addresses, An address can only belong to one user. One-to-many Assume that the current demand is to...

黄舟 2017-06-10 09:49:39 0  6  1532

How to get openid after scanning the QR code image generated with PHP?

I used the PHP QR code generation class library to generate a QR code picture (not generated by the WeChat interface). I want to get the openid of a WeChat user after scanning the QR code. How can I implement this function? (I previously thought of using web page authorization to achieve this, but t...

LRTRL 2017-06-28 16:57:44 0  1  2011

phpstudy2018 500 error occurred when uploading php suffix file

The following is the code for uploading files, but when I upload web script languages ​​​​such as php, asp, jsp, a 500 error occurs. Other suffix files are normal, but when I use phpstudy2016, the upload is normal. I feel that it may be a problem with the apache configuration file, so I thought I wo...

安静ˇ 2018-03-07 15:59:26 0  1  2376