PHP批量清空删除指定文件夹内容：

cleancache.php

<?php

// 清文件缓存

$dirs = array(

	realpath(dirname(__FILE__) . '/../data/cache_data'),

	realpath(dirname(__FILE__) . '/../data/cache_file'),

	realpath(dirname(__FILE__) . '/../data/cache_view')

);

// 清理缓存

foreach($dirs as $dir) {

	do_rmdir($dir, false);

	echo "<div style='border:2px solid green; background:#f1f1f1; padding:20px;margin:20px;width:800px;font-weight:bold;color:green;text-align:center;'>\"" . $dir . "\" have been cleaned clear! </div>";

}

/**

 * 清空/删除 文件夹

 * @param string $dirname 文件夹路径

 * @param bool $self 是否删除当前文件夹

 * @return bool

 */

function do_rmdir($dirname, $self = true) {

	if (!file_exists($dirname)) {

		return false;

	}

	if (is_file($dirname) || is_link($dirname)) {

		return unlink($dirname);

	}

	$dir = dir($dirname);

	if ($dir) {

		while (false !== $entry = $dir->read()) {

			if ($entry == '.' || $entry == '..') {

				continue;

			}

			do_rmdir($dirname . '/' . $entry);

		}

	}

	$dir->close();

	$self && rmdir($dirname);

}