Method to generate PDF files: Use Node.js to connect to MySQL database

I'm trying to generate a PDF file using Nodejs, Pdfkit and pdfkit-table using data stored in a Mysql database. I need to print records from a database to a table in a PDF document. The code below generates an empty PDF file. Please help me solve the problem why it is not generating PDF file with dat...

P粉154798196 2023-08-25 14:23:44 0  1  657

symfony - Use commands to generate different corresponding entities in different bundles according to the database in a project

In a project, use commands to generate different corresponding entities under different bundles according to the database database: test table: account, product There are two bundles in the symfony project DemoAccountBundle DemoProductBUndle directly use the command ph...

世界只因有你 2017-05-16 16:45:06 0  1  393

The smartest way to generate duplicate HTML source code. Using PHP?

Hi, I would like to know what is the smart way to generate duplicate HTML source code like below. Let's say I have 30 rows numbered from 1 to 30. I have a lot of pages like this that need this structure. I've used a PHP loop to generate this code in the page itself, since I'm using PHP anyway in my ...

P粉146080556 2023-09-10 16:37:09 0  1  590

How to pass the value of a generated button from one PHP file to another?

I want to pass the id value of the PHP generated button from theory.php file to theory1.php file. The code is as follows: //theory.phpfilerequire('components/db.php');$query="SELECT*FROM`courses`";$result=mysqli_query($connect,$query)ordie("Error:".m

P粉155832941 2023-09-14 21:00:35 0  1  568

mysql - php How to generate a prize based on the prize's winning probability value (0-10000)?

How to generate a prize based on the prize's winning probability value (0-10000) in php? How is the algorithm implemented? Among 10 prizes

PHP中文网 2017-05-16 12:59:16 0  1  464

javascript - Through the session, the verification code generated by php can be refreshed by clicking on it. Why?

Generate verification code through php, and then output it with img tag. Excuse me, why if there is session_start() and the onclick event is written like this, clicking will have the effect of refreshing the verification code? (A new verification code will appear) There is no session, and the click ...

PHP中文网 2017-05-16 12:59:41 0  3  440

How to get openid after scanning the QR code image generated with PHP?

I used the PHP QR code generation class library to generate a QR code picture (not generated by the WeChat interface). I want to get the openid of a WeChat user after scanning the QR code. How can I implement this function? (I previously thought of using web page authorization to achieve this, but t...

LRTRL 2017-06-28 16:57:44 0  1  2000

symfony3 - Ask the master: How to ignore the table prefix when symfony generates entities from the database

Ask the master: How to ignore the table prefix when generating entities from the database? For example, t_test directly generates Test when generating entity. Is there any way to solve this problem? Thanks! "php bin/console doctrine:mapping:import --force AdminBundle anno...

PHPz 2017-05-16 16:43:49 0  1  715

Help from a newbie: About the loop that generates static lists in PHP

Let me ask you guys, PHP generates a static list. After the loop, the database value is normal, but the generated html data keeps repeating the data of the first loop. for ($i=0; $i < $allpages; $i++){ if ($i==0) { $indexpath = "index_0.html";&nbsp

°无恙。 2019-05-22 18:00:06 0  1  1032

php - How to store background logs

Are the operation logs and error logs generated in the background stored in files or databases?

阿神 2017-05-16 13:04:29 0  1  918

Laravel - lumen introduces a third-party package to connect to Oracle, but the configuration file to connect to Oracle does not take effect, and it still connects to MySQL by default. What should I do?

Lumen5.4.6 is used. In order to connect to oracle, the third-party package yajra/laravel-oci8 is introduced and execute $ php artisan vendor:publish --tag=oracle. After generating the configuration file and filling in the configuration information, I still cannot connect to the Oracle database.

为情所困 2017-06-06 09:54:40 0  1  1009

PHP master looks at an array problem

{Code...} The data in the data inventory is like this ['7','2'] 7 represents the product id and 2 represents the quantity of the product purchased. Now how can I restore it to an array that can be used by PHP?

高洛峰 2017-06-08 11:01:38 0  7  858

git - 在web应用分布式部署的情况下怎么进行配置更新

目前项目采用git管理，设想的是开发机器push到源码库，然后在每台生产环境的windows server上定时push最新代码，但目前的问题是开发阶段配置文件里面的参数之类都是指向测试环境的，生产环境的配置文件是不一样的...

巴扎黑 2017-05-02 09:19:02 0  3  814

git - Travis CI How to get only changed files?

Hi, I came up with this need when maintaining staticfile: I need to verify whether the PR submitted by others complies with the specifications. However, staticfle is a very large library. If you have to git clone every PR and submission, a lot of unnecessary errors will be generated. flow. Is there ...

phpcn_u1582 2017-05-02 09:43:15 0  2  765

mongodb - mongoengine中 gridfs对象的read()方法只能读取一次流数据，未查到类似seek()方法！

数据库：mongo 工具：mongoengine 业务：读取MD5值，生成文件。 读取MD5值，需要读取一次gridfs对象 生成文件，需要第二次读取gridfs对象 当第二次调用gridfs对象时gridfs.read() == "" 请问这样的问题如何解决？

迷茫 2017-04-25 09:02:26 0  1  807

How the settings.json file is generated

Hello teacher, how are the configuration files in the PHP operating principle and development environment generated? How are the settings.json files in the settings in VScode generated? Thanks

P粉751989631 2022-11-25 14:33:23 0  0  684

In PHP, how to encode the generated verification code image into base64?

PHP server Android client I need to encode the verification code image generated by the server into base64. Note: Instead of generating a display image, the generated image resource is directly encoded into base64 so how to do? ? ? ? ? ? ?

阿神 2017-05-27 17:42:38 0  2  1649

Generate Brocken metadata classes on alpine Docker image via protobuf

A while ago I used an ubuntu image to generate PHP files via protoclib and it generated some metadata classes containing the normal hashes used by protobuf. It is generated as follows: namespaceMyApp\ProtobufMetadata\Schema\v1;classRequest{publicstatic$is_initialized=false;publicstaticfunctioninitOn...

P粉824889650 2024-02-17 15:33:51 0  1  394

java - How to query through external key in spring?

Entity relationship: A teacher has multiple students {code...} At this time, the database will automatically generate the foreign key of teacher_id in the student table. But if I know the teacherId, how can I query all the students of this teacher? By external teacher_id

为情所困 2017-05-17 09:58:13 0  2  639

When loading a Python module written in C language, it prompts that the function in .so is not found?

I try to write a Python module in C language, but my C program itself depends on a third-party library (libwiringPi.so). When I import the library I generated in the Python source program, I will be prompted that the function is undefined. , these functions are all in that third-party library, how s...

怪我咯 2017-05-18 11:00:29 0  1  621