Exercism: Hello world

README.md

@@ -15,7 +15,7 @@ THE SOURCE IS PROVIDE AS-IS WITHOUT WARRANTY OF ANY KIND. USE AT YOUR RISK. KEEP
 | Haskell     | I    |
 | Kotlin      | I    |
 | Lua         | I    |
-| Objective-C |      |
+| Objective-C | Out, exercism requires Xcode |
 | PHP         |      |
 | Python      |      |
 | Racket      |      |

php/hello-world/.exercism/config.json

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+{
+  "blurb": "The classical introductory exercise. Just say \"Hello, World!\"",
+  "authors": ["duffn"],
+  "contributors": ["arueckauer", "joseph-walker", "kytrinyx", "petemcfarlane"],
+  "files": {
+    "solution": ["HelloWorld.php"],
+    "test": ["HelloWorldTest.php"],
+    "example": [".meta/example.php"]
+  },
+  "source": "This is an exercise to introduce users to using Exercism",
+  "source_url": "http://en.wikipedia.org/wiki/%22Hello,_world!%22_program"
+}

php/hello-world/.exercism/metadata.json

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+{"track":"php","exercise":"hello-world","id":"7b7802f384124a5680659835c6bf3e98","url":"https://exercism.org/tracks/php/exercises/hello-world","handle":"JBiason","is_requester":true,"auto_approve":false}

php/hello-world/HELP.md

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+# Help
+
+## Running the tests
+
+## Running the tests
+
+1. Go to the root of your PHP exercise directory, which is `<EXERCISM_WORKSPACE>/php`.
+   To find the Exercism workspace run
+
+       ➜ exercism debug | grep Workspace
+
+1. Get [PHPUnit] if you don't have it already.
+
+       ➜ wget -O phpunit https://phar.phpunit.de/phpunit-9.phar
+       ➜ chmod +x phpunit
+       ➜ ./phpunit --version
+
+2. Execute the tests:
+
+       ➜ ./phpunit file_to_test.php
+
+   For example, to run the tests for the Hello World exercise, you would run:
+
+       ➜ ./phpunit HelloWorldTest.php
+
+[PHPUnit]: http://phpunit.de
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit HelloWorld.php` command.
+This command will upload your solution to the Exercism website and print the solution page's URL.
+
+It's possible to submit an incomplete solution which allows you to:
+
+- See how others have completed the exercise
+- Request help from a mentor
+
+## Need to get help?
+
+If you'd like help solving the exercise, check the following pages:
+
+- The [PHP track's documentation](https://exercism.org/docs/tracks/php)
+- [Exercism's support channel on gitter](https://gitter.im/exercism/support)
+- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
+
+Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
+
+To get help if you're having trouble, you can use one of the following resources:
+
+ - [/r/php](https://www.reddit.com/r/php) is the PHP subreddit.
+ - [StackOverflow](https://stackoverflow.com/questions/tagged/php) can be used to search for your problem and see if it has been answered already. You can also ask and answer questions.

php/hello-world/HelloWorld.php

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+<?php
+
+function helloWorld()
+{
+    return "Hello, World!";
+}

php/hello-world/HelloWorldTest.php

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+<?php
+
+/*
+ * By adding type hints and enabling strict type checking, code can become
+ * easier to read, self-documenting and reduce the number of potential bugs.
+ * By default, type declarations are non-strict, which means they will attempt
+ * to change the original type to match the type specified by the
+ * type-declaration.
+ *
+ * In other words, if you pass a string to a function requiring a float,
+ * it will attempt to convert the string value to a float.
+ *
+ * To enable strict mode, a single declare directive must be placed at the top
+ * of the file.
+ * This means that the strictness of typing is configured on a per-file basis.
+ * This directive not only affects the type declarations of parameters, but also
+ * a function's return type.
+ *
+ * For more info review the Concept on strict type checking in the PHP track
+ * <link>.
+ *
+ * To disable strict typing, comment out the directive below.
+ */
+
+declare(strict_types=1);
+
+class HelloWorldTest extends PHPUnit\Framework\TestCase
+{
+    public static function setUpBeforeClass(): void
+    {
+        require_once 'HelloWorld.php';
+    }
+
+    public function testHelloWorld(): void
+    {
+        $this->assertEquals('Hello, World!', helloWorld());
+    }
+}

php/hello-world/README.md

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+# Hello World
+
+Welcome to Hello World on Exercism's PHP Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## Instructions
+
+The classical introductory exercise. Just say "Hello, World!".
+
+["Hello, World!"](http://en.wikipedia.org/wiki/%22Hello,_world!%22_program) is
+the traditional first program for beginning programming in a new language
+or environment.
+
+The objectives are simple:
+
+- Write a function that returns the string "Hello, World!".
+- Run the test suite and make sure that it succeeds.
+- Submit your solution and check it at the website.
+
+If everything goes well, you will be ready to fetch your first real exercise.
+
+## Source
+
+### Created by
+
+- @duffn
+
+### Contributed to by
+
+- @arueckauer
+- @joseph-walker
+- @kytrinyx
+- @petemcfarlane
+
+### Based on
+
+This is an exercise to introduce users to using Exercism - http://en.wikipedia.org/wiki/%22Hello,_world!%22_program