challenges

my solutions to various "programming challenge" problems
git clone https://wehaveforgeathome.hates.computer/challenges.git
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006.php (162B)

      1 <?php
      2 
      3 $sum = 0;
      4 $sum_of_squares = 0;
      5 
      6 for ($i = 1; $i <= 100; $i++) {
      7   $sum += $i;
      8   $sum_of_squares += $i * $i;
      9 }
     10 
     11 print $sum * $sum - $sum_of_squares . "\n";