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  1. <?php foreach(['heads', 'tails'] as $i): ?>
  2.  <?=1-$i^=F;
  3. endforeach; ?>
Success #stdin #stdout #stderr 0.02s 24400KB
comments (?)
stdin 
Standard input is empty
stdout 
 1 -1
stderr 
PHP Notice:  Use of undefined constant F - assumed 'F' in /home/7hTDXG/prog.php on line 2
PHP Notice:  Use of undefined constant F - assumed 'F' in /home/7hTDXG/prog.php on line 2
https://ideone.com/kLyO5M
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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