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<?php function fib($n) { $cur = 2; $prev = 1; for ($i = 0; $i < $n; $i++) { yield $cur; $temp = $cur; $cur = $prev + $cur; $prev = $temp; } } $fibs = fib(3); foreach ($fibs as $fib) { echo " " . $fib; }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.5 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.20, 8.3.0 - 8.3.8
2 3 5

preferences:
164.7 ms | 404 KiB | 169 Q