php代码
<?php class RecursiveFileFilterIterator extends FilterIterator { // 满足条件的扩展名 protected $ext = array('jpg','gif'); /** * 提供 $path 并生成对应的目录迭代器 */ public function __construct($path) { parent::__construct(new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path))); } /** * 检查文件扩展名是否满足条件 */ public function accept() { $item = $this->getInnerIterator(); if ($item->isFile() && in_array(pathinfo($item->getFilename(), PATHINFO_EXTENSION), $this->ext)) { return TRUE; } } } // 实例化 foreach (new RecursiveFileFilterIterator('D:/history') as $item) { echo $item . PHP_EOL; }