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  1. <?php
  2.  
  3. function findSummation($aNum)
  4.         {
  5.             if(is_nan($aNum) || $aNum < 0)
  6.             {
  7.                 return false;
  8.             }
  9.  
  10.             $result = $aNum;
  11.  
  12.             while($aNum > 0)
  13.             {
  14.                 $result += --$aNum;
  15.             }
  16.             return $result;
  17.         }
  18.  
  19.         var_dump(findSummation(-1));
Success #stdin #stdout 0.01s 82880KB
comments (?)
stdin 
Standard input is empty
stdout 
bool(false)
https://ideone.com/s50L80
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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