Check whether the inner iterator's current element has children

# RecursiveCallbackFilterIterator::hasChildren

(PHP 5 >= 5.4.0, PHP 7, PHP 8)

RecursiveCallbackFilterIterator::hasChildren — Check whether the inner iterator's current element has children

### Description

public RecursiveCallbackFilterIterator::hasChildren(): bool

Returns `true` if the current element has children, `false` otherwise.

### Parameters

This function has no parameters.

### Return Values

Returns `true` if the current element has children, `false` otherwise.

### Examples

Example #1 RecursiveCallbackFilterIterator::hasChildren() basic usage

`<?php
$dir = new RecursiveDirectoryIterator(__DIR__);
// Recursively iterate over XML files
$files = new RecursiveCallbackFilterIterator($dir, function ($current, $key, $iterator) {
// Allow recursion into directories
if ($iterator->hasChildren()) {
return TRUE;
}
// Check for XML file
if (!strcasecmp($current->getExtension(), 'xml')) {
return TRUE;
}
return FALSE;
});
?>`

### See Also

- RecursiveCallbackFilterIterator Examples
- RecursiveCallbackFilterIterator::__construct() - Create a RecursiveCallbackFilterIterator from a RecursiveIterator
- RecursiveCallbackFilteriterator::getChildren() - Return the inner iterator's children contained in a RecursiveCallbackFilterIterator

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