Raindrops in PHP
Convert a number to a string, the contents of which depend on the number's factors.
1  exercism fetch php raindrops

Raindrops
Convert a number to a string, the contents of which depend on the number's factors.
 If the number has 3 as a factor, output 'Pling'.
 If the number has 5 as a factor, output 'Plang'.
 If the number has 7 as a factor, output 'Plong'.
 If the number does not have 3, 5, or 7 as a factor, just pass the number's digits straight through.
Examples
 28's factors are 1, 2, 4, 7, 14, 28.
 In raindropspeak, this would be a simple "Plong".
 30's factors are 1, 2, 3, 5, 6, 10, 15, 30.
 In raindropspeak, this would be a "PlingPlang".
 34 has four factors: 1, 2, 17, and 34.
 In raindropspeak, this would be "34".
Running the tests

Go to the root of your PHP exercise directory, which is
<EXERCISM_WORKSPACE>/php
. To find the Exercism workspace run1
% exercism debug  grep Workspace

Get PHPUnit if you don't have it already.

Execute the tests:
1
% ./phpunit.phar raindrops/raindrops_test.php
Source
A variation on a famous interview question intended to weed out potential candidates. http://jumpstartlab.com
Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.