hphp/test/slow/late_static_binding/1877.php

   1 <?php
   2
   3 class A {
   4   static public function foo() {
   5     static::bar();
   6   }
   7   public function bar() {
   8     var_dump(__CLASS__);
   9   }
  10   public function foo2() {
  11     B::foo();
  12     // B always changes 'static'
  13     self::foo();
  14  // 'self' doesn't change 'static'
  15   }
  16 }
  17 class B extends A {
  18   public function bar() {
  19     var_dump(__CLASS__);
  20   }
  21   public function foo3() {
  22     $this->foo();
  23   // $this changes 'static'
  24     parent::foo();
  25  // 'parent' doesn't change 'static'
  26   }
  27 }
  28
  29 $a = new A();
  30 $b = new B();
  31
  32 B::foo();
  33    // B
  34 $b->foo();
  35   // B
  36
  37 $b->foo2();
  38  // BB
  39 $b->foo3();
  40  // BB
  41
  42 A::foo();
  43    // A
  44 $a->foo();
  45   // A
  46
  47 $a->foo2();
  48  // BA