Threading in PHP

Learn about the background of multithreading and its roots in PHP.


A lot has happened since the advent of modern computing in the previous century. Software today is as metastable as it has ever been, and Input/Output operations—database read-write actions, API calls and so on—are, sans optimization, really slow. The norm today is to mitigate slow I/O with overly-compensative techniques like parallelization, especially in the creation of large, dynamic applications capable of processing complex instructions in large quantities. Distributed systems are at the center of the burst in concurrency and have become ubiquitous out of necessity in the computing world today. Such systems are therefore capable of parallelly executing typically arduous I/O computations.

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