<?php class ExampleClass { /** * Sleeps for the given number of seconds, plus a random number of seconds between 0 and 100. * * @param int $seconds * @return int * @throws Exception */ public function sleep(int $seconds=1): int { sleep($seconds); return random_int(0, 100) + $seconds; } /** * Calculates pi using the Leibniz formula. * * @param int $iterations * @return float */ public function pi(int $iterations): float { $pi = 0; $sign = 1; for ($i = 0; $i < $iterations; $i++) { $pi += $sign / (2 * $i + 1); $sign *= -1; } return $pi * 4; } /** * Throws an exception. * * @return void * @throws Exception */ public function throwException(): void { throw new Exception('This is an exception.'); } }