RecursiveCallbackFilterIterator::hasChildren

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

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

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