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  catalogue 1, Array basis 2, Definition of array 3, Assignment of array 4, Value of array 5, Classification of arrays 6, Some common system functions of arrays 1, Array basis In php, array is an ordered collection of several data. It has the following characteristics: ① there are no special requirements for the data type of the data ...

I prefaceMycat exposes services in the form of a Server, and its main configuration class is Server XML, this article mainly focuses on some small details, mainly including:Server. How to load XMLConfiguration and role in ServerFlow of Server in connection requestII Server.xml configuration2.1 Server.xml configuration detailsServer.xml is mainl ...

Distributed full text search solution 1. Solution introduction ElasticSearch is a distributed full-text search engine based on RESTful web interface. The solution is to implement a distributed full-text search system based on three data systems: Mysql database, Hadoop Ecology (optional) and ElasticSearch search engine. It mainly includes th ...

Coding specification Follow psr specification PHP PSR Standard Specification Development Branch All development branches are based on the development branch The branch is named as feature / beginning + basic branch + name + function + date. For example: feature / develop-order-zhao-0423 Route naming All are written in lowercase English, ...

MongoDB is used in recent projects, so I probably learned the basic operation. Please forgive me for the bad writing. For more details, please go to the official website: https://docs.mongodb.com/manual/aggregation/ 1,$type 1.1 description The     $type operator retrieves the matching data types in the collection based on ...

1 Notice: Undefined index: ZZZZZZWTF? [duplicate] When running the PHP script again, it is clear that there is no problem with the script syntax, but there are the following prompts: Notice: Undefined index: submit in C:\xampp\htdocs\globalautoparts\register.php on line 36 Notice: Undefined index: fullname in C:\xampp\htdocs\globalautoparts\r ...

In the near future, we need to make some modifications to Zen. We installed a bunch of php environment, but we still don't know how to run the project locally. We simply deployed a new open source Zen on the test server, directly connected to the database, copied the code in the folder / opt/zbox/app/zentao, and directly modified it. Restart th ...

preface: phpMyAdmin is a MySQL database management tool based on PHP and built on the server in Web mode. It enables managers to manage MySQL database through web interface. Because of its simple and easy to operate graphical interface based on Web, it is loved by website managers. When we get the MySQL account and password through other ...

0x00 deserialization problem in CTF In this kind of problems, we mainly use deserialization to bypass or call various magic methods, so as to construct qualified serialized strings and complete specific functions. At this point, we should be very clear about the execution process of the whole code segment. Let's start with the simplest. 0x01 ...

Recently, it was found that the gender field in a user information table was not correctly maintained in the database due to previous problems. Now it needs to be maintained. I wanted to write a program directly. It should be interesting to think about using Mysql. Therefore, I decided to use stored procedures to complete the maintenance of the ...