Location: PHPKode > projects > phc > test/subjects/codegen/isset_null.php
<?php
  if(isset($a)) echo "a is set\n"; else echo "a is not set\n";
  $a = NULL;
  if(isset($a)) echo "a is set\n"; else echo "a is not set\n";
  $a = 1;
  if(isset($a)) echo "a is set\n"; else echo "a is not set\n";
  $a = NULL;
  if(isset($a)) echo "a is set\n"; else echo "a is not set\n";
?>
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