hphp/test/quick/byref2.php

   1 <?hh
   2
   3 function id(&$x) { return $x; }
   4 function main() {
   5   $y = 12;
   6   $w =& id(&$y);
   7   $w = 7;
   8   echo $y;
   9   echo "\n";
  10 }
  11 main();