// ----------------------------
// PHP, like C, supports 'static' local variables, that is, those that upon
// first access are initialised, and thence retain their value between function
// calls. However, the 'counter' example is better implemented as a class
class Counter
{
private $counter;
function __construct($counter_init)
{
$this->counter = $counter_init;
}
function next_counter()
{
$this->counter++;
return $this->counter;
}
function prev_counter()
{
$this->counter;
return $this->counter;
}
}
// ------------
$counter = new Counter(42);
echo $counter->next_counter() . "\n";
echo $counter->next_counter() . "\n";
echo $counter->prev_counter() . "\n";
}
?>
