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  1. <?php
  2.  
  3. function fibonacci($n)
  4. {
  5.     if ($n < 3) {
  6.         return 1; 
  7.     }
  8.     else {
  9.         return fibonacci($n-1) + fibonacci($n-2);
  10.     }
  11. }
  12.  
  13. $fib = 31;
  14.  
  15. for ($n = 1; $n <= $fib; $n++) {
  16.     if ($n == $fib) {
  17.     echo(fibonacci($n));
  18. 	}
  19. }
Success #stdin #stdout 0.08s 24380KB
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https://ideone.com/E9zYNH
language:
PHP (php 7.3.5)
created:
3 years ago
visibility:
public

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