略微加速

PHP官方手册 - 互联网笔记

PHP - Manual: RecursiveCallbackFilterIterator::hasChildren

2024-11-13

RecursiveCallbackFilterIterator::hasChildren

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

RecursiveCallbackFilterIterator::hasChildrenCheck 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

示例 #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

add a noteadd a note

User Contributed Notes

There are no user contributed notes for this page.

官方地址:https://www.php.net/manual/en/recursivecallbackfilteriterator.haschildren.php

北京半月雨文化科技有限公司.版权所有 京ICP备12026184号-3