/**
* Calculate the Fibonacci number of the given integer.
* @param int n If n <= 0 then 0 is assumed.
* @return int Fibonacci number.
*/
public static function fib($n)
{
if ($n <= 0) {
return 0;
} else {
if ($n == 1) {
return 1;
} else {
return Fibonacci::fib($n - 1) + Fibonacci::fib($n - 2);
}
}
}
* Copyright 2015 The University of Edinburgh.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
namespace Maths;
require "Fibonacci.php";
/**
* Print usage information.
*/
function printUsage()
{
print "Usage: php FibonacciProgram.php N\n";
print " where N >= 0\n";
}
if (count($argv) < 2) {
printUsage();
} else {
print Fibonacci::fib($argv[1]);
print "\n";
}
/** Test Fibonacci::fib(30). */
public function testFib30()
{
$this->assertEquals(832040, Fibonacci::fib(30));
}
