function helloWorld(string $name = 'World'): string
return "Hello $name!";
Get better at programming through fun, rewarding coding exercises that test your understanding of concepts with Exercism.
Given a moment, determine the moment that would be after a gigasecond has passed.
Clean up user-entered phone numbers so that they can be sent SMS messages.
Use the Sieve of Eratosthenes to find all the primes from 2 up to a given number.
PHP is constantly being updated and improved.
PHP was designed specifically with web development in mind.
As a general purpose scripting language, PHP can be used for almost any task.
PHP's simple syntax, gradual typing, and robust standard library make rapid development a breeze.
PHP is well documented by the official PHP.net website, which includes helpful community commentary.
Write once, run anywhere PHP is supported.
Every language has its own way of doing things. PHP is no different. Our mentors will help you learn to think like a PHP developer and how to write idiomatic code in PHP. Once you've solved an exercise, submit it to our volunteer team, and they'll give you hints, ideas, and feedback on how to make it feel more like what you'd normally see in PHP - they'll help you discover the things you don't know that you don't know.Learn more about mentoring
The PHP track on Exercism has 11 concepts and 108 exercises to help you write better code. Discover new exercises as you progress and get engrossed in learning new concepts and improving the way you currently write.See all PHP exercises
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