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Just another update

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Ingy döt Net 2015-02-20 00:35:01 -05:00
parent a25938f123
commit 00a190b0a6
6591 changed files with 94363 additions and 23227 deletions
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15
Task/Anonymous-recursion/PHP/anonymous-recursion-1.php
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@ -2,12 +2,15 @@
function fib($n) {
if ($n < 0)
throw new Exception('Negative numbers not allowed');
else if ($n < 2)
return 1;
else {
$f = __FUNCTION__;
return $f($n-1) + $f($n-2);
}
$f = function($n) { // This function must be called using call_user_func() only
if ($n < 2)
return 1;
else {
$g = debug_backtrace()[1]['args'][0];
return call_user_func($g, $n-1) + call_user_func($g, $n-2);
}
};
return call_user_func($f, $n);
}
echo fib(8), "\n";
?>