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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 0  6  1132

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.

奮斗 2018-12-04 22:49:33 0  2  1535

php - mysql update operation is slow, how to solve it

The database has an items table. Now we need to update the userid field in it. The statement is UPDATE items SET userid = xxx WHERE userid = 0 limit 1; We have started transactions to optimize the time, but it still feels too slow. It costs 3 to update 30,000 items. minute. Try to create a temp tabl...

僅有的幸福 2017-05-16 13:07:09 0  2  651

Example of relationship involving multiple entities

I haven't found any examples of MYSQL many-to-many relationships neither here nor in Google. What I'm looking for is a very simple example where php+mysql displays results from a database. Can someone write a very simple example?

P粉327903045 2023-08-27 21:44:53 0  2  610

Example of many-to-many relationship

I haven't found any examples of MYSQL many-to-many relationships either here or on Google. I would like to see a very simple example using php+mysql to display the results of the database. Can someone write a very simple example?

P粉785905797 2023-08-18 11:04:20 0  2  805

Can PHP directly call functions in a class without using new?

I have to do something new every time, which is very unaccustomed. Can I use the functions in the class directly? The purpose of using the class is to look at the static attributes inside, so that when operating redis or mysql, automatic connection and connection reuse can be realized without the ne...

只爭朝夕 2022-12-23 12:12:24 0  1  2058

Is there any way to implement simple queries using php+mysql?

There are 500 pieces of data in the mysql database, of which 100 fields are date: 2017-04-20, 400 fields are date: 2017-04-21. Is there a way to display the contents of these two fields separately through php? For example, select 2017-04- on the php page. At 20, only the 100 pieces of data are displ...

給我你的懷抱 2017-05-16 13:09:28 0  3  618

How to make methods under classes automatically complete in sublime?

I now use the sublime editor as a PHP learning and development tool. When I followed the study, I found that when Teacher Zhu entered the getLastInsID method under the Db class, he only needed to enter get and 3 Db class containing get would be brought out. method, and then quickly select one of the...

Binbin(斌斌老師) 2019-03-28 13:08:49 0  2  1073

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  1385

PHP: Call MySQL stored procedure with input and output parameters (not "INOUT")

I want to call a stored procedure in MySQL from PHP. The procedure takes input and output parameters - not "INOUT" parameters. To give a simple example, suppose I have the following stored procedure in MySQL: DELIMITER$$DROPPROCEDUREIFEXISTS`test_proc`$$CREATEPROCEDURE`test_proc`(ininput_p...

P粉502608799 2023-10-19 16:56:30 0  2  894

Teaching course preview for September 12, 2018: Detailed explanation of dom operations in Javascript

1. Teaching topic: DOM operation content in Javascript. (The full name of DOM is Document Object Model, which allows js scripts to control Web pages, windows and documents.) For more detailed explanations of JavaScript knowledge points, please pay attention to tonight's live class on time! Lecturer:...

藏色散人 2018-09-12 14:45:26 0  0  1440

Class library, how to use it, is there any detailed method?

My MySQL class library in PHP, after loading it with include, can only define variables. How to use the functions in it? It is useless to write the function name directly. Please give me a detailed method. Thank you.

哈哈哈哈。 2018-07-12 11:54:40 0  6  1387

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  625

Nginx-based WordPress installation fails?

I am a newbie. I recently got a server and wanted to set up a simple blog to enjoy myself. So I chose the simplest wordpress, followed the step-by-step tutorial on wordpress to install it, and installed mysql to allocate the wordpress database, and then installed php* with yum according to the infor...

PHPz 2017-05-16 17:28:53 0  3  1306

c++ - Which PHP extension source code is most suitable for novices to learn and read?

RT, my current level is that I have learned C language, and then I have written a simple extension myself (a very simple extension). Now I want to learn more about it. There are many extensions built into the official PHP source code package. I looked at something like The amount of extension code f...

過去多啦不再A夢 2017-06-05 11:07:15 0  1  711

MySQL connection not working: 2002 No such file or directory

I'm trying to set up WordPress. I have Apache and MySQL running and the account and database are set up. I try to establish a simple connection: <?php$conn=mysql_connect('localhost','USER','PASSWORD');if(!$conn){echo'Error:'.mysql_errno().'-'. mysql_error();}?> I always get this: Error: 2002-N...

P粉422227023 2024-02-25 14:08:33 0  2  513

How to disable PHP reporting SQL errors?

I have my own PHP data class that logs MySQL errors to a txt file using mysqli_error($this->conn). Everything was working fine until I set PHP error handling to E_ALL. Now PHP intercepts the error and it doesn't have a chance to be handled by my MySQL error handler. This wouldn't be a problem exc...

P粉550257856 2023-09-05 17:14:24 0  1  796

mysql - PHP scheduled task, after an operation is executed, it will time for two hours and then send a text message to the user.

The requirement is that after the user performs an operation, count down for two hours, and then perform another operation at the time point. But now there is no way to time these two hours. Do you have any good ideas?

ringa_lee 2017-05-16 13:04:54 0  9  857

What is a pagoda panel and what does it do?

Simply put, Pagoda is a WEB server suite that integrates software tools commonly used in web services such as Apache, MySQL, PHP, and Nginx. It is a popular WEB server panel. To put it simply, it is to facilitate the operation and maintenance of your website. Before using the Pagoda panel, I built t...

七秒 2021-10-22 11:28:01 0  3  5905

Does anyone have detailed tutorials on mysql5.7 installation?

I feel that installing nginx and php is relatively simple, but mysql is more troublesome. The official website does not provide a very detailed introduction. For example, there is no distinction between work and root users, the installation steps cannot be followed, and the permissions of each direc...

漂亮男人 2017-05-24 11:33:16 0  2  962