The difference between swoole and socket

Socket is the interface for tcp/ip operations provided by the system. Swoole is a php extension that encapsulates the socket and provides a php operation interface.

A socket is an abstraction layer through which applications can send or receive data, and can open, read, write, and close operations like files. . Sockets allow applications to insert I/O into the network and communicate with other applications on the network. A network socket is a combination of IP address and port. (Recommended learning: swoole video tutorial)

The transport layer implements end-to-end communication, therefore, each transport layer connection has two endpoints. So, what are the endpoints of the transport layer connection? Not the host, not the host's IP address, not the application process, not the transport layer protocol port.

The endpoint of the transport layer connection is called a socket. According to the definition of RFC793: the port number concatenated with the IP address forms a socket.

The so-called socket is actually a communication endpoint. Each socket has a socket serial number, including the IP address of the host and a 16-bit host port number, which is in the form of (host IP address: port number). For example, if the IP address is 210.37.145.1 and the port number is 23, the resulting socket is (210.37.145.1:23).

In short, Socket Socket= (IP address: port number) , the socket is expressed by writing the port number after the IP address in dotted decimal notation, with a colon or separated by commas. Each transport layer connection is uniquely identified by the two endpoints (i.e., the two sockets) on either side of the communication.

Swoole is a PHP asynchronous network communication engine for production environments, allowing PHP developers to write high-performance asynchronous concurrent TCP, UDP, Unix Socket, HTTP, and WebSocket services.

Swoole can be widely used in the Internet, mobile communications, enterprise software, cloud computing, online games, Internet of Things (IOT), Internet of Vehicles, smart homes and other fields. Using PHP Swoole as a network communication framework can greatly improve the efficiency of enterprise IT R&D teams.

Includes the following special functions:

1. ORM-like data query, providing a SQL wrapper that allows MySQL's SQL to interact with PHP's Array, session, and Cache Seamless integration.

2. App MVC layered structure, effective program structure layering, improves program maintainability and scalability, achieves low coupling, and is developed based on interfaces.

3. Integrate a large number of practical functions, such as convenient database operations, template operations, cache operations, system configuration, form processing, paging, data calling, dictionary operations, upload processing, content editing, debugging, etc.

4. Template-data reflection system can directly call data in the template and provide many tags. It can realize various updates and maintenance of the website without modifying the program and only modifying the template.

A few other functions

1. Swoole contains a large number of classes and provides many functional extensions. Basically, most of the functional classes that can be used in web development All can be found in the Swoole framework.

2. Swoole has a plug-in system, Fckeditor, Adodb, pscws Chinese word segmentation, Chinese full-text indexing system, the latest Key-Value database idea, TokyoTyrant, which can infinitely expand the functions of the framework.

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