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141.85 ms | 1399 KiB | 7 Q<?hh
function fibonacci()
{
$a = 0;
$b = 1;
return function() use (&$a, &$b)
{
$c = $a;
$a = $b;
$b += $c;
return $c;
};
}
$fib = fibonacci();
for ($i = 0; $i < 10; $i++) {
echo $fib(), PHP_EOL;
}