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In this article Xiaobian for you to introduce in detail "what is the role of php multi-process communication pipeline", detailed content, clear steps, details handled properly, I hope that this "php multi-process communication pipeline what is the role of" article can help you solve doubts, the following follow the editor's ideas slowly in-depth, to learn new knowledge together.

Description

1. Pipeline is a commonly used means of multi-process communication, which is divided into unnamed pipeline and famous pipeline.

2. Unnamed pipes can only be used for inter-process communication with kinship, while named pipes can be used for any process on the same host.

Example

$pipe_path ='/ data/test.pipe';if (! file_exists ($pipe_path)) {if (! posix_mkfifo ($pipe_path,0664)) {exit ("create pipe error!");}} $pid = pcntl_fork (); if ($pid = = 0) {/ / child process, write data to the pipeline $file = fopen ($pipe_path,'w'); while (true) {fwrite ($file,'hello world') $rand = rand (1pr 3); sleep ($rand);} exit ('child endings');} else {/ / parent process, read data from the pipeline $file = fopen ($pipe_path,'r'); while (true) {$rel = fread ($file,20); echo "{$rel}\ n"; $rand = rand (1jue 2); sleep ($rand) }} read here, this article "what is the function of php multi-process communication channel" has been introduced. If you want to master the knowledge points of this article, you still need to practice and use it yourself. If you want to know more about related articles, welcome to follow the industry information channel.

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