hphp/test/quick/cuf07.php

   1 <?hh
   2 function foo() { return "hello"; }
   3 function bar() { return "goodbye"; }
   4 function test() {
   5   if (function_exists('foo')) {
   6     var_dump(foo());
   7   } else {
   8     var_dump(0);
   9   }
  10 }
  11 function main() {
  12   test();
  13   fb_rename_function('foo', 'baz');
  14   test();
  15   fb_rename_function('bar', 'foo');
  16   test();
  17 }
  18 main();