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 function 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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