什么是线程在编程时意味着什么？

Question

i read somewhere that php has threading ability called pcntl_fork(). but i still dont get what it means? whats its purpose?

software languages have multithreading abilities from what i understand, correct me if im wrong, that its the ability for a parent object to have children of somekind.

thanks

Answer 1

It is not a very good metaphor. Think of a thread like a worker or helper that will do work or execute code for you in the background while your program could possibly be doing other tasks such as taking user input.