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 0  6  1027

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 0  2  1407

javascript - After editing the js page, I want to perform some operations on the data traversed from the database. For example, if the gender is male, the font will turn red.

After editing the js page, you want to perform some judgment operations on the data traversed from the database. For example, if the gender is male, the font will turn red. Move the mouse over the name to see his profile. Note: The profile exists in the database.

大家讲道理 2017-05-19 10:29:23 0  2  493

Updates to multiple databases - mysql

I'm new to mysql. I have a list of 10 databases containing the same table structure. The same table needs to be updated for each database. Is there an option to do it through phpmyadmin without selecting each database? Or is there a function similar to: USELIKEgc%?

P粉129731808 2023-08-27 11:15:21 0  1  501

Building an application using MongoDb and Laravel 8.83

I'm a beginner in php and Laravel, I'm trying to build this simple CRUD application using mongodb as database, I'm using https://www.mongodb.com/compatibility/mongodb-laravel-intergration as a tutorial to learn how to do this I'm currently stuck on displaying data in laravel, I've added the database...

P粉155551728 2024-03-31 22:18:53 0  1  454

python - pymysql reports error 1146 The xls table failed to import into the database. I don't know where the problem lies.

Python 4.3.0 defines a class to operate the local database, and then defines two functions to import the corresponding two tables. The strange thing is that the first function input_HA() can be used and the form is imported successfully, but the second input_ImpactList() does not work. Can anyone he...

漂亮男人 2017-05-18 10:55:11 0  1  1216

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 0  1  1270

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 1  2  888

PHP OOP - Return result of $obj->get() and $obj->get()->count() without calling another method

It's hard to explain exactly what I want, but I have to try... LaravelEloquent inspired me to write a simple php class to use the database. As far as we know we can do this in Laravel: $run=DB::table('users')->where('id',3)->where('level',2)->get (); We also do this: $run=DB::table('users')...

P粉742550377 2024-04-01 12:28:10 0  1  509

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 0  2  498

The test database operation class db statically calls the getInstance method.

In the entry file idnex.php, new base.php calls the run method. How to complete the connection to the database in base.php. I don't see an instance of the db class in the code. Can any kind person explain this to me? Thanks!

航航 2022-08-18 17:23:59 0  1  838

How to select multiple classes with the same name in JS

I use PHP to dynamically render these lists I get from the database, each list has the same class and since I can't change it, it renders dynamically. I select these classes via JavaScript and create an event on click to open and close them using the hidden class. Now I have a problem, this event wo...

P粉005134685 2024-03-26 17:46:43 0  2  401

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 0  1  351

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 0  0  1005

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 0  0  788

Simple way to calculate median with MySQL

What is the simplest (hopefully not too slow) way to calculate the median using MySQL? I'm using AVG(x) to find the mean, but I'm having trouble finding an easy way to calculate the median. Right now I'm returning all the rows to PHP, sorting, and then selecting the middle rows, but there must be so...

P粉720716934 2023-08-29 11:47:07 0  2  890

The rewritten title is: Using PHP buttons combined with jQuery and POST methods to get return values

I have a simple form to get usernames and would like to achieve the following: When the user clicks on a button, the button will be disabled to prevent multiple clicks (in real cases it may take a few seconds to process all the data, e.g. calling an API , write to database, etc.); after clicking, a ...

P粉738821035 2023-09-05 08:42:27 0  2  560

The Linux system does not support PHP operations to access the database. Can you please advise on other solutions?

The database of Windows computer software is accessible. If you want to share data, upload the database mdb file to the web server through php, and then php reads the mdb database into html. When the web server is windows, the test is normal. The Linux system does not support PHP operations to acces...

forever 2017-10-31 14:35:35 0  1  1032

Ag-Grid: Is it possible to style a row on a timer, rather than based on the data in the row?

I need to change the background color of rows after some time. There is a column in the grid with time in seconds and I need to change the row color after 50% of that time has passed. The data in the grid itself doesn't change, so using rowClassRules doesn't seem to work as nothing changes to trigge...

P粉277824378 2024-04-03 20:14:05 0  1  485

Associate variable ID with profile page

I have a page that displays some information from a database. I want to add a link to each row (say the name as a link) that I can click to jump to a page that displays the rest of the information for that row (say a profile page). I thought about creating a link that passes the id to the profile pa...

P粉022285768 2023-09-10 10:56:31 0  1  784