Object iteration 1/2

the construct foreach in PHP5 supports also object, in addition to arrays.

foreach($object as $key=>$val)
{
//$key will be equal to the nth member name
//$val will be equal to the nth member value
}

Which members are visibile ? it depends on the "foreach" position !

• inside the class ($this is the object): all the members are visibile
• outside the class: only public members are visible
• inside an inherited class: public and protected

Example:

class A
{

public $a;
public $b;
private $p;
public function __construct($a, $b, $p){
$this->a = $a;$this->b = $b; $this->p = $p;
}
public function f()
{

foreach($this as $k=>$v)
{print "$k => $v \n"; }
}

}

$a = new A(1,2,3);

foreach($a as $k=>$v)
{

print "$k => $v \n";

} //a => 1 b => 2

$a->f(); //a => 1 b => 2 p => 3