Php/docs/recursivecallbackfilteriterator.haschildren

• PHP Manual
• RecursiveCallbackFilterIterator
• Check whether the inner iterator's current element has children

RecursiveCallbackFilterIterator::hasChildren

(PHP 5 >= 5.4.0, PHP 7)

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

说明

public RecursiveCallbackFilterIterator::hasChildren ( ) : bool

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

参数

此函数没有参数。

返回值

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

范例

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;});?>

参见

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