Iterator(Aggregate)インターフェイス
<?php
class MyArray implements IteratorAggregate {
private $array = array(1,2,3);
public function __construct() {
$this->array[] = 10;
}
public function getIterator() {
return new MyIterator($this->array);
}
}
class MyIterator implements Iterator {
private $position = 0;
public function __construct($array) {
$this->array = $array;
$this->position = 0;
}
function rewind() {
$this->position = 0;
}
function current() {
return "VAL: " . $this->array[$this->position];
}
function key() {
return "KEY: " . $this->position;
}
function next() {
++$this->position;
}
function valid() {
return isset($this->array[$this->position]);
}
}
$obj = new MyArray;
foreach($obj as $key => $val) {
print "$key , $val\n";
}
参考
