hphp/test/quick/instanceof.php

   1 <?hh
   2
   3 class Bob {
   4 }
   5 class Loblaw {
   6 }
   7 // Interfaces
   8 interface BaseOne {
   9 }
  10 interface BaseTwo {
  11 }
  12
  13 interface Iface extends BaseOne, BaseTwo {
  14 }
  15
  16 class Base implements BaseOne {
  17 }
  18 class Fancy implements Iface {
  19 }
  20
  21 function main() {
  22   $a = new Bob();
  23
  24   // instanceof constant
  25   var_dump($a instanceof Bob);
  26   var_dump($a instanceof Loblaw);
  27
  28   // instanceof string variable
  29   $bob = "Bob";
  30   $loblaw = "Loblaw";
  31   var_dump($a instanceof $bob);
  32   var_dump($a instanceof $loblaw);
  33
  34   // instanceof object
  35   $bob = new Bob();
  36   $loblaw = new Loblaw();
  37   var_dump($a instanceof $bob);
  38   var_dump($a instanceof $loblaw);
  39
  40   $b = new Base();
  41   var_dump($b instanceof BaseOne);
  42
  43   // Follow the interface hierarchy up
  44   $f = new Fancy();
  45   var_dump($f instanceof BaseTwo);
  46 }
  47 main();