/**
* @expectedException \InvalidArgumentException
*/
public function testChoiceFromEmptySequence()
{
choice([]);
}
<?php
require_once __DIR__ . '/../autoload.php';
use function nspl\rnd\choice;
use function nspl\rnd\weightedChoice;
use function nspl\rnd\sample;
use function nspl\a\pairs;
// 1. Get random array element
$random = choice([1, 2, 3]);
echo sprintf("Random number is %s\n", $random);
// 2. Get 3 random numbers between 1 and 1000
$numbers = sample(range(1, 1000), 3);
echo sprintf("Three random numbers between 1 and 1000 are: %s\n", implode(', ', $numbers));
// 3. Get lottery winner, changes are proportional to number of tickets bought
// When data is presented in pairs [user_name, tickets_number]
$winner = weightedChoice([['Jack', 1], ['John', 3], ['Tom', 2]]);
echo sprintf("Lottery winner is %s (data was presented in pairs)\n", $winner);
// When data is presented in a dictionary array(user_name => tickets_number)
$winner = weightedChoice(pairs(array('Jack' => 1, 'John' => 3, 'Tom' => 2)));
echo sprintf("Lottery winner is %s (data was presented as a dictionary)\n", $winner);