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When inserting data encapsulated by the PHP class, the insertion is always unsuccessful and false is returned;

<?php //Database operation class class Model{ Private $host; //Database address Private $user; //Database username Private $pwd; /

A _ Ｑ _ｉ_ 2021-10-13 10:21:27

After cross-class call, method cannot be found

Do static method overloading to achieve chained access to the database exercise demo5.php references the Query.php class and then accesses the method in Query. The page prompts me that the method 'table' is not found in the Database. The following is the source code. I hope it can help. The first er...

方人胥 2021-06-12 17:16:18

javascript - How to implement this set of data to be classified and displayed by alphabetical list without changing the data structure

{code...} is classified according to the letters A B C...list such as {code...} similar link description how to operate this set of data. . {Code...} How to sort, I found that the page is unordered, it is the unordered characteristic of js objects!

给我你的怀抱 2017-05-24 11:36:52

PHP automatically performs the login operation after discovering that the login has expired, and then continues the previous step.

Conditions: There is a third-party website, and every step of the operation needs to be logged in. Now I have built a simple front-end page and used PHP to make a springboard in the middle. Process: Every request on the page I built is transmitted to the PHP springboard through ajax, and then the PH...

暖暖橙 2022-06-13 15:06:16

Page error, please try again later

Teacher, I followed your operation step by step. When I encapsulated the database access class, the web page prompted: Page error. Please try again later! I assign simple numbers to $res and it can be displayed normally.

奋斗 2018-12-04 22:49:33

symfony - How to use $this->get non-bundle in your own newly created class.

I am using edusoho. It is developed based on symfony2. There is a service folder in it that provides operations on the database (not the service in the configuration file in symfony2). This service is not a bundle and is not registered in registerBundles. In fact, there are many custom installations...

我想大声告诉你 2017-05-16 16:43:43

How to optimize query reduction?

Just wanted to ask! The red dots above request the back-end to directly query the database conditions and return the result! Now the database can be processed quickly if there is little data, but once the amount of data is large, the returned results will become slower. How to optimize the backend? ...

我想大声告诉你 2017-06-06 09:52:20

I have the front-end source code, but I don't know how to connect it to the back-end.

I want to develop a backend management system, similar to cms. There are more than 1000 html files. I want to convert them into php or stored databases, but I don’t know how to operate them. I tried to transfer these files to the WordPress theme yesterday and failed many times. I want to Please tell...

P粉932382659 2022-05-24 16:47:40

PHP asynchronously requests API and rolls back directly after failure

After PHP operates the DB, it will request the API interfaces of two other services. Now there is a question, if the request fails, how to roll back the DB? Methods other than rolling back the database

淡淡烟草味 2017-05-16 13:13:11

SMProxy, a MySQL database connection pool developed by Swoole based on the MySQL protocol.

SMProxySwoole MySQL Proxy is a MySQL database connection pool developed by Swoole based on the MySQL protocol. The principle is to store the database connection as an object in the memory. When the user needs to access the database, the connection will be established for the first time. Later, inste...

子山 2019-01-29 14:50:17

c# - How does the Find() method in MongoDB.NET return the value of the specified field?

Using ASP.NET MVC5, I want to filter and read specified data from mongoDB based on conditions, similar to select fields1, fields form table where name='123' in a relational database. How should I write a return when operating mongoDB in .NET? Methods for specific fields? ...

高洛峰 2017-05-02 09:22:44

Open source PHP novice entry-level framework WillPHP (similar to ThinkPHP)

WillPHP is a lightweight development and learning MVC framework, an entry-level framework for PHP newbies (similar to ThinkPHP). ###Lightweight and extremely fast size 211KB (uncompressed), 22 initial files loaded (15 with page cache enabled), memory overhead <100KB. ###Main functions: automatic ...

P粉605904125 2022-07-23 16:30:16

How to log exceptions at Spring's @Transaction level?

Before using @Transaction, my business code model was roughly as follows: {code...} Similar to the above, no matter whether my above database operation is executed successfully or failed, I can get feedback in the log. But the above approach will cause a lot of code...

某草草 2017-06-06 09:51:47

Get and display user information from the database: when someone visits the URL https://example.com/{username}

I have user information in database table. When someone visits the URL https://example.com/{username}, I want to get the user's information from the database and display it on the page. But I'm confused on how to accomplish this since the https://example.com/{username} page doesn't exist. I'm using ...

P粉919464207 2023-09-16 15:03:44

How to display multiple events per day in my php calendar code

My calendar works fine as written, but if I add another event on the same day, it only displays the first event recorded in the database. I need to be able to display multiple events on the same day. I'm trying to use for/next loops and while loops in my code to extract information from the database...

P粉950128819 2023-09-06 10:03:16

Recruiting PHP development engineers

Job Responsibilities: 2+ years of PHP development experience, proficient in MySQL database, familiar with Linux operations, and able to use Git, continuous learning ability, good at communication, strong ability to withstand pressure, focus on efficiency, familiar with HTML5, CSS3, JavaScript and ot...

手机用户1617931986 2022-09-08 09:31:12

PHP operates the database through steps to register a user

PHP operates the database through steps to register a user. In this tutorial, the connect.php code we implemented is as follows: The code below this line shows failure after registration. The ID inserted by the current user is 0. What is the problem with waiting for the enemy?

Xn 2019-08-03 22:59:37

C# - Entity Framework Core - Automated database generation

When I run my desktop application for the first time, I want the database and table structure to be created automatically. I can't find any examples or documentation on the equivalent method in EFCore. I followed all the instructions in this document: https://dev.mysql.com/doc/connector-net/en/conne...

P粉520204081 2023-08-26 17:41:13

Display json type data in blade

Displaying json type data in blade I have a table in my database which stores data and one of the data is of json type, everything is going fine but when I want to display these json in blade the problem starts which is My json data type [![Enter image description here][1]][1] In my blade I use php ...

P粉064448449 2024-03-22 12:05:15

[Must-read for front-end job hunting] Selected front-end development interview questions and answers_Outline

Front-end development interview knowledge points outline: 1. HTML&CSS: Understanding of Web standards, browser kernel differences, compatibility, hacks, basic CSS skills: layout, box model, selector priority and use, HTML5, CSS3, mobile terminal adaptation 2. JavaScript: Data type, object-ori...

天蓬老师 2017-11-13 12:02:37