hphp/test/quick/inout-ref-function.php

   1 <?hh
   2 function func(&$a, &$b, &$c): void {
   3   print("In func: $a, $b, $c\n");
   4
   5 }
   6
   7 $a = 'hello';
   8 $b = 'world';
   9 $c = 8;
  10 func(
  11   inout $a,
  12   inout $b,
  13   inout $c,
  14 );
  15 print("After func: $a, $b, $c\n");