Flatten Array in PHP
Take a nested list and return a single list with all values except nil/null
exercism fetch php flatten-array
Take a nested list and return a single flattened list with all values except nil/null.
The challenge is to write a function that accepts an arbitrarily-deep nested list-like structure and returns a flattened structure without any nil/null values.
Running the tests
Go to the root of your PHP exercise directory, which is
<EXERCISM_WORKSPACE>/php. To find the Exercism workspace run
% exercism debug | grep Workspace
Get PHPUnit if you don't have it already.
Execute the tests:
% ./phpunit.phar flatten-array/flatten-array_test.php
Interview Question https://reference.wolfram.com/language/ref/Flatten.html
Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.