functions.php
<?php
/**
* Return one book.
* @param $name string name of a book to return
*/
function one(string $name){
return ['name'=>'cat'];
}
/**
* Return many books
* @param $name_like text within book titles you're searching for
*/
function many(string $name_like){
return [['name'=>'Cats Are Us'],['name'=>'Cats rule the world']];
}