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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  612

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

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

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

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

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

Trying to access the array offset of a value of type null in an array populated from a MySQLi result set

I finally got around to updating my PHP installation from 7.2 to 7.4 (planned to update directly to the current version, but will do it in steps) and when I ran the existing script I got a strange error: Message: Trying to access a value of type null The line where the array offset appears is just p...

P粉046387133 2024-01-02 18:45:44 0  2  679

Query which table a given value is in

I need some help. In my database I have several tables containing product details, each product has a unique ID. Now I have a given product ID - how do I get the table name of which table this product is stored in since I have different tables in my database? How can I store the table name in a PHP ...

P粉727416639 2023-08-10 14:56:55 0  1  521

Laravel Modal does not return data

I don't know why I'm not getting the value from the modal in my Laravel controller. Please check it for me. However, I use the same code for other modes and controllers. It's working and returning the value from the property without any issues. I'm using Laravel8 and php8.1; below is my code. app\Ht...

P粉174151913 2024-03-29 10:31:31 0  1  586

Can I use the automatic generation module of thinkphp5 in Windows 7 system? How to configure and use

明民 2017-10-10 17:04:14 0  2  1379

After installing the PHP toolbox, all the mysql tables in phpstudy that I installed before are gone. What should I do?

After installing the PHP toolbox, all the mysql tables in phpstudy that I installed before are gone. What should I do?

劉袁銘 2017-10-10 19:25:59 0  4  2935

mcrypt_get_key_size()

To use mcrypt_get_key_size() in php study, how to enable mcrypt_

劉袁銘 2017-10-10 19:47:34 0  1  1167

Detecting login status and preventing repeated login status in TP5 - My page is wrong

冥冥之中天注定 2017-10-10 22:49:15 0  0  1180

Issues with resending WeChat public account template messages?

For example: I am using PHP to develop WeChat public accounts. If I send a template message, the WeChat client may receive 1-3 messages. I checked Baidu and said that the WeChat server will resend in 5 seconds. How to solve this problem?

飛揚(yáng) 2017-10-11 08:00:11 0  0  1139

How to install php7

我無限黑暗里的小太陽▼ 2017-10-11 09:11:44 0  1  1143

Solve (no language limit)

A census taker asked a woman, "How many children do you have and how old are they?" The woman replied, "I have three children. Their ages multiplied is 36. The sum of their ages is equal to the house number of the segregated room." Census The enumerator immediately went to the ne...

路過 2017-10-11 10:20:08 0  1  1359

There is no WWW file in the phpStudy directory. Enter localhost in the website and the hello world solution will come out directly! I created the WWW folder in the root directory and then created an abc.php. localhost/abc.php still didn't come out and an error was reported. not found

<?phpphpinfo();?>

M..moli瞎 2017-10-11 11:45:27 0  7  5206

Find an authoritative and practical development tutorial or article on WeChat scan code authorization to log in to the website

Find an authoritative and practical development tutorial or article on WeChat scan code authorization to log in to the website

極世 2017-10-11 12:33:15 0  1  1681