PHP는 spl 라이브러리를 사용하여 파일을 탐색합니다.

<?php
	class ExtentionFinder extends FilterIterator
	{
		public $predicate, $path;
		public function __construct($path, $predicate)
		{
			$this->predicate = $predicate;
			$this->path = $path;

			$it = new RecursiveDirectoryIterator($path);
			$flatIterator = new RecursiveIteratorIterator($it);

			parent::__construct($flatIterator);
		}

		public function accept()
		{
			$pathInfo = pathinfo($this->current());
			$extension = $pathInfo['extension'];

			return ($extension == $this->predicate);
		}
	}
?>
<?php

	$it = new ExtentionFinder(&#39;./&#39;, &#39;php&#39;);
	foreach($it as $value)
	{
		echo $value."<br/>";
	}
?>