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  1. <?php
  2.  
  3. function skill($x, $y) {
  4.     return (~$x & $y | $x & ~$y) == 0;
  5. }
  6.  
  7. function unskill($x, $y) {
  8.     return ~$x & $y | $x & ~$y == 0;
  9. }
  10.  
  11. var_dump(unskill(0, 1) == skill(0, 1));
Success #stdin #stdout 0.02s 24452KB
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stdin
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Standard input is empty
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bool(false)
https://ideone.com/N3zXSv
language:
PHP (php 7.3.5)
created:
5 years ago
visibility:
public

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