ReflectionClass::isIterable
(PHP 7 >= 7.2.0, PHP 8)
ReflectionClass::isIterable — このクラスがイテレーション可能かを調べる
パラメータ
この関数にはパラメータはありません。
例
例1 基本的な ReflectionClass::isIterable() の例
<?php
class IteratorClass implements Iterator {
public function __construct() { }
public function key() { }
public function current() { }
function next() { }
function valid() { }
function rewind() { }
}
class DerivedClass extends IteratorClass { }
class NonIterator { }
function dump_iterable($class) {
$reflection = new ReflectionClass($class);
var_dump($reflection->isIterable());
}
$classes = array("ArrayObject", "IteratorClass", "DerivedClass", "NonIterator");
foreach ($classes as $class) {
echo "Is $class iterable? ";
dump_iterable($class);
}
?>
上の例の出力は以下となります。
Is ArrayObject iterable? bool(true) Is IteratorClass iterable? bool(true) Is DerivedClass iterable? bool(true) Is NonIterator iterable? bool(false)
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