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start Recently watching The way of PHP , see Code style guide PHP CS fixer in chapter. PHP CS fixer can automatically help you fix the code style, not just formatting. If you only need to format the code automatically when saving, PhpStorm can open this: Many of the items sent by others have not been formatted before. At least the automatic f ...

First, you need to create an order table Create the database migration file when creating the model php artisan make:model Order -m Perfect database fields public function up() { Schema::create('orders', function (Blueprint $table) { $table->id(); $table->integer('user_id')->comment('User placin ...

Explore Kafka from the perspective of PHP - realize simple producer function code first public function actionProducer() { $conf = new \RdKafka\Conf(); $conf->set('metadata.broker.list', 'broker address'); /** * kafka Delivery callback * RdKafka\Message Object * ( * [err] => 0 // If it is equal to 0, the delivery is ...

When exporting dcat data, you need to use row and column merging. There seems to be no introduction to row merging in the easy excel document provided by dcat. I plan to use larevel excel instead. Because I installed version 3.1 and the dcat document is 2.x, it is incompatible and needs to be modified. When laravel admin was used to export, its ...

Factory Pattern sketch There are three types of factory modes. 1. Simple factory mode. 2. Factory method mode. 3. Abstract factory pattern. Principles and ideas of design Encapsulate the creation of objects in factory classes to decouple the creation and use of objects. Product hierarchy and product family Product hierarchy : ...

[TOC] Complexity of algorithm Learn how to analyze the complexity of an algorithm. Why algorithm complexity Why do we need to introduce a concept of time complexity? Suppose we allow us to give the complexity of a code segment through running time directly on the server. This method becomes post statistics. What are the drawbacks of this app ...

Introduction Carbon * inherits PHP's * Datetime * class and jsonseriable. Therefore, the methods not covered in * carbon * but implemented in * Datetime * and JsonSerializable * can be used. class Carbon extends DateTime implements JsonSerializable { //code here } The Carbon class is declared under the Carbon namespace. Instead of ...

home pagespecial columnPHP GardenArticle details0Laravel 5.8 bottom learning note 01 - control inversion and dependency injectionIT pony Published 10 minutes agoreference material:Explanation of core concepts of laravel underlying core code analysisPHP inversion of control (IOC) and dependency injection (DI)1 - Laravel framework coreadvantageIn ...

0X00 problem appears How does laravel of php implement horizontal sub table? Recently, there was a project in hand. The framework used the laravel7 framework of php. Due to the surge in the amount of data, 300000 rows of data were produced in one night for the details of rapid iterative development, and the main table had 12 million data. Beca ...

Basics Create databaseCREATE DATABASE database-nameDelete databasedrop database dbnameBackup sql server//device for creating backup data USE master EXEC sp_addumpdevice 'disk', 'testBack', 'c:\mssql7backup\MyNwind_1.dat' //Start backup BACKUP DATABASE pubs TO testBackCreate a new tablecreate table tabname(col1 type1 [not null] [primary key],c ...