hphp/test/slow/array_access/foreach.php

   1 <?php
   2 class C implements ArrayAccess {
   3   public $arr = array();
   4   public function offsetGet($k) {
   5     echo "C::offsetGet $k\n";
   6     return $this->arr[$k];
   7   }
   8   public function offsetSet($k, $v) { $this->arr[$k] = $v; }
   9     public function offsetExists($k) { return isset($this->arr[$k]); }
  10     public function offsetUnset($k) { unset($this->arr[$k]); }
  11 }
  12 class D implements ArrayAccess {
  13   public static $a, $b, $c, $d;
  14   public $arr = array();
  15   public function __construct($x, $y) {
  16     $this->arr[0] = $x;
  17     $this->arr[1] = $y;
  18   }
  19   public function offsetGet($k) {
  20
  21     echo "D::offsetGet $k\n";
  22     $a = self::$a; $b = self::$b; $c = self::$c; $d = self::$d;
  23     echo "  a=$a b=$b c=$c d=$d\n";
  24     return $this->arr[$k];
  25   }
  26   public function offsetSet($k, $v) { $this->arr[$k] = $v; }
  27     public function offsetExists($k) { return isset($this->arr[$k]); }
  28     public function offsetUnset($k) { unset($this->arr[$k]); }
  29 }
  30 $x = new C;
  31 $x->arr[0] = new D(11, 22);
  32 $x->arr[1] = new D(33, 44);
  33 D::$a = D::$b = D::$c = D::$d = 0;
  34 foreach (array($x) as list(list(D::$a,D::$b),list(D::$c,D::$d))) {}