RecursiveArrayIterator::hasChildren

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

RecursiveArrayIterator::hasChildrenReturns 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.

示例

示例 #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();
}
?>

以上示例会输出:

No children.
No children.
a : apple
p : pear

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