(PHP 5 >= 5.1.0, PHP 7, PHP 8)
RecursiveArrayIterator::getChildren — Returns an iterator for the current entry if it is an array or an object
Returns an iterator for the current iterator entry.
此函數沒有參數。
An iterator for the current entry, if it is an array or object; or null on failure.
An InvalidArgumentException will be thrown if the current entry does not contain an array or an object.
示例 #1 RecursiveArrayIterator::getChildren() example
<?php
$fruits = array("a" => "lemon", "b" => "orange", array("a" => "apple", "p" => "pear"));
$iterator = new RecursiveArrayIterator($fruits);
while ($iterator->valid()) {
if ($iterator->hasChildren()) {
// print all children
foreach ($iterator->getChildren() as $key => $value) {
echo $key . ' : ' . $value . "\n";
}
} else {
echo "No children.\n";
}
$iterator->next();
}
?>
以上例程會輸出：
No children. No children. a : apple p : pear