Php/docs/recursivearrayiterator.haschildren
RecursiveArrayIterator::hasChildren
(PHP 5 >= 5.1.0, PHP 7)
RecursiveArrayIterator::hasChildren — Returns whether current entry is an array or an object
说明
public RecursiveArrayIterator::hasChildren ( ) : bool
Returns whether current entry is an array or an object for which an iterator can be obtained via RecursiveArrayIterator::getChildren().
参数
此函数没有参数。
返回值
Returns true if the current entry is an array or an object,
otherwise false is returned.
范例
Example #1 RecursiveArrayIterator::hasChildren() example
<?php$fruits = array("a" => "lemon", "b" => "orange", array("a" => "apple", "p" => "pear"));$iterator = new RecursiveArrayIterator($fruits);while ($iterator->valid()) { // Check if there are children 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
参见
- RecursiveArrayIterator::getChildren() - Returns an iterator for the current entry if it is an array or an object
