Php/docs/recursivearrayiterator.getchildren
RecursiveArrayIterator::getChildren
(PHP 5 >= 5.1.0, PHP 7)
RecursiveArrayIterator::getChildren — Returns an iterator for the current entry if it is an array or an object
说明
public RecursiveArrayIterator::getChildren ( ) : RecursiveArrayIterator
Returns an iterator for the current iterator entry.
参数
此函数没有参数。
返回值
An iterator for the current entry, if it is an array or object.
错误/异常
An InvalidArgumentException will be thrown if the current entry does not contain an array or an object.
范例
Example #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();}?>
以上例程会输出:
No children. No children. a : apple p : pear