linux - epoll + non-blocking IO receiving data problem

epoll + non-blocking io model, the edge trigger I set up. Now the client is a browser, and the form uploads a 2M file. The server monitors the readable event. I use recv to obtain it. Why is the data received incomplete and -1 returned? , errno = EAGAIN. {code...} cur_recv is large enough, difficult...

PHP中文网 2017-05-27 17:44:36 0  1  820

2-8 The video deleted from the database was placed in the wrong place

2-8 The video deleted from the database was placed in the wrong place

秋闲独醉 2021-11-25 14:17:15 0  6  1112

Database data

Could you please provide the database data?

虾米 2021-01-12 10:59:30 0  0  1150

utf-8 - Java uses FileWriter to write int type data to a file, the file data is wrong?

(I know my title is very vague, because I really don’t know how to describe it.) The cause of the matter is that I developed an Android APP in Java, and one of its functions is to use FileWriter to write int data to a data file. This data file is created using File's createNewFil...

phpcn_u1582 2017-05-17 09:58:09 0  1  631

Backup of PostgreSQL database design - no data

I'm trying to find a way to backup my database design without including the data stored in the database. Actually, one might say I want a file containing all "CREATEScripts" in the database. Ideally, this file can be used to recreate the database (without the data of course). How to avoid ...

P粉098417223 2023-08-24 14:29:36 0  1  659

Data refresh display - how to display data in the database like flight information on a large screen at an airport

There are n pieces of data in the database (which may change in real time). Now I want to display 8 pieces of data at a time on the big screen. How to automatically scroll P and display it in real time? Display like flight information on a large screen in an airport

王 2018-06-14 10:07:14 0  6  2085

No data is displayed in the data table

Why is the data added in phpmyadmin not displayed in the data table?

吥离吥弃 2018-02-27 10:12:47 0  2  1096

data sheet

Why doesn't this come with a data sheet? Is there a data sheet? Can you give me a copy?

嘀嘀 2020-11-03 13:45:35 0  1  1738

php data acquisition?

php data acquisition? php data acquisition? php data acquisition?

Mr.V 2017-07-27 21:56:28 0  4  2256

Migrate data from one database to another

I need to migrate data from one database to another, both on the same local system. The table and column names are different and I don't have to migrate all the columns from the old database, so Select* doesn't work for me. INSERTINTONewDatabase.table1(Column1,Column2);SELECToldDatabase.table1(colum...

P粉509383150 2023-08-24 09:58:47 0  2  695

In MySQL database, how to copy one database to another database

A test environment database and a development environment database; the test environment database has been modified, but now the modified data needs to be restored to the original data, so how to copy the development environment database to the test environment database

P粉582593074 2023-08-10 10:34:20 0  0  523

Caching reporting data in the same transaction database vs using a data warehouse

We have a SaaS solution where each tenant has its own MySQL database. Now I'm designing a dashboard for this SaaS system and it requires some analytical charts. To obtain the data required for the chart, we can query each tenant's transaction data in real time from its database. and get updated grap...

P粉511749537 2024-02-26 19:20:23 0  1  421

Database file import

How to create your own database, and how to import the teach_manger.sql data table file into your database; how to create your own database, and how to import the teach_manger.sql data table file into your database; how to create your own database, And how to import the teach_manger.sql data table f...

缘 2019-03-27 11:01:41 0  2  1328

thinkphp returns database data all as strings

I use mamp for local development. There is no problem with the data retrieved from the database. The database is defined as a numeric type and the returned value is also a numeric type. For example: id: 35, but when I deployed it to the server, I used centos+nginx+php. At this time, I found that all...

星星蓝蓝 2019-04-08 16:59:40 0  5  1430

PHP loop reading data from database problem

As shown in the figure below, why can't the program read database data?

世界只因有你 2017-06-29 10:08:05 0  4  1093

SimpleXML not loading GML data

I have the following sample XML data that I want to parse to SimpleXML using PHP: <?xmlversion="1.0"encoding="utf-8"?><ogr:FeatureCollectionxmlns:xsi="http://www.w3.org /2001/XMLSchema-instance"xsi:schemaLocati

P粉718165540 2024-04-04 10:04:41 0  1  531

php - sql server2012 database data loss

The timer program reads data from redis every 5 minutes for table storage. Later, it was discovered that there were multiple tables with data loss from April 27 to May 3 as shown in the picture. What are the reasons for data loss? The code for joining the team is as follows:

过去多啦不再A梦 2017-05-24 11:31:01 0  1  502

Fatal error: Uncaught mysqli_sql_exception: Database 'bsmn' is unknown

I have imported the database into my php admin but the problem persists: Fatal error: Uncaught mysqli_sql_Exception: Unknown database "bsmn" in C:\xampp\htdocs\bsmn\connection.php:8 Stack trace ：#0C:\xampp\htdocs\bsmn\connection.php(8)：mysqli_connect('localhost','root','','bsmn')#1

P粉343408929 2023-10-24 18:44:33 0  1  721

database

Link to database using php

移动用户-6464727 2020-04-18 23:32:55 0  0  1283

database

Connect to the database without specifying a data table? I have three tables in it. How does it know which one to use? Is it because of this reason that the effect cannot come out?

铁力瓦尔良 2021-05-18 15:01:43 0  1  1112