(PHP 7 >= 7.2.0, PHP 8)
ReflectionClass::isIterable — 檢查此類別是否可迭代
此函式沒有參數。
範例 #1 基本 ReflectionClass::isIterable() 用法
<?php
class IteratorClass implements Iterator {
public function __construct() { }
public function key() { }
public function current() { }
public function next() { }
public function valid() { }
public 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 $class) {
echo "$class 是否可迭代？ ";
dump_iterable($class);
}
?>上述範例會輸出：
Is ArrayObject iterable? bool(true) Is IteratorClass iterable? bool(true) Is DerivedClass iterable? bool(true) Is NonIterator iterable? bool(false)