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* IteratorインターフェイスとIteratorAggregateインターフェ...
class MyArray implements IteratorAggregate {
private $array = array();
public function __construct($array) {
$this->array = $array;
}
public function getIterator() {
#return new ArrayIterator($this->array);
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]);
}
function getPos() {
return $this->position;
}
function size() {
return sizeof($this->array);
}
function isEven() {
return $this->position % 2 == 0 ? true : false;
}
}
$arrayObj = new MyArray(array(100,200,300));
foreach ($arrayObj as $k => $v) {
print "$k $v\n";
}
$it = $arrayObj->getIterator();
print $it->size() . "\n";
foreach ($it as $k => $v) {
print ($it->isEven() ? 'O' : 'X') . " $k $v\n";
}
$it = new MyIterator(array(100,200,300));
print $it->size() . "\n";
foreach ($it as $k => $v) {
print $it->getPos() . ": $k $v\n";
}
KEY: 0 VAL: 100
KEY: 1 VAL: 200
KEY: 2 VAL: 300
3
O KEY: 0 VAL: 100
X KEY: 1 VAL: 200
O KEY: 2 VAL: 300
3
0: KEY: 0 VAL: 100
1: KEY: 1 VAL: 200
2: KEY: 2 VAL: 300
Iteratorインターフェイスを実装したイテレータクラスを作る...
なお、イテレータクラスのメソッド（ここではisEven()やsize(...
** 参考 [#pf68bd5c]
- Iterator インターフェイス http://www.php.net/manual/ja/...
- IteratorAggregate インターフェイス http://www.php.net/m...
終了行:
* IteratorインターフェイスとIteratorAggregateインターフェ...
class MyArray implements IteratorAggregate {
private $array = array();
public function __construct($array) {
$this->array = $array;
}
public function getIterator() {
#return new ArrayIterator($this->array);
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]);
}
function getPos() {
return $this->position;
}
function size() {
return sizeof($this->array);
}
function isEven() {
return $this->position % 2 == 0 ? true : false;
}
}
$arrayObj = new MyArray(array(100,200,300));
foreach ($arrayObj as $k => $v) {
print "$k $v\n";
}
$it = $arrayObj->getIterator();
print $it->size() . "\n";
foreach ($it as $k => $v) {
print ($it->isEven() ? 'O' : 'X') . " $k $v\n";
}
$it = new MyIterator(array(100,200,300));
print $it->size() . "\n";
foreach ($it as $k => $v) {
print $it->getPos() . ": $k $v\n";
}
KEY: 0 VAL: 100
KEY: 1 VAL: 200
KEY: 2 VAL: 300
3
O KEY: 0 VAL: 100
X KEY: 1 VAL: 200
O KEY: 2 VAL: 300
3
0: KEY: 0 VAL: 100
1: KEY: 1 VAL: 200
2: KEY: 2 VAL: 300
Iteratorインターフェイスを実装したイテレータクラスを作る...
なお、イテレータクラスのメソッド（ここではisEven()やsize(...
** 参考 [#pf68bd5c]
- Iterator インターフェイス http://www.php.net/manual/ja/...
- IteratorAggregate インターフェイス http://www.php.net/m...
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