What language is swoole written in?
Swoole is a PHP asynchronous network communication engine for production environments, PHP The asynchronous, parallel, high-performance network communication engine is written in pure C language and provides asynchronous IO servers and clients of multiple communication protocols. Swoole2.0 supports Go language-like coroutines, which can use fully synchronous code to implement asynchronous programs.
Recommended learning: swoole tutorial
Swoole introduction:
In fact, as a PHP programmer, I know very well PHP does have many limitations, such as Unix system programming, network communication programming, and asynchronous io, which most PHPers do not understand. There is indeed no such thing in the PHP world. The Swoole open source project was born to make up for PHP's shortcomings in these aspects. Unlike products such as WordPress, swoole is actually an engine for network communication and asynchronous IO, and a basic library. PHPer can use swoole to implement functions that PHP could not achieve in the past. swoole opens the door to another world for PHPer.
php's existing application methods are all based on http, which is relatively weak for situations that require fast real-time response. For example, online games or push services generally need to maintain a long-term TCP connection with the user in order to respond in real time and push information. .
swoole is designed to solve such application scenarios.
This is to allow PHP to establish a service by itself. It does not require an agent such as nginx and directly listens to the port to achieve communication.
An application method can also replace nginx as http service, but it is generally not used this way.
PHP needs to use the system's socket to communicate with the outside world.
The commonly used Apache nginx is an encapsulated socket, which can achieve concurrent processing. The client sends a request to nginx/apache, and then forwards it to the fastcgi port for PHP processing
swoole integrates the system socket into the bottom layer of PHP, and PHP can directly interact with the client through swoole.
In other words, swoole is a network library that encapsulates the underlying socket.
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