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/** * Calculate the full size of a directory * * @author Jonas John * @version 0.2 * @linkhttp://www.jonasjohn.de/snippets/php/dir-size.htm * @paramstring$DirectoryPathDirectory path */function CalcDirectorySize（$DirectoryPath） {// I reccomend using a normalize_path function here// to make sure $DirectoryPath contains an ending slash// （-> http://www.jonasjohn.de/snippets/php/normalize-path.htm）// To display a good looking size you can use a readable_filesize// function.// （-> http://www.jonasjohn.de/snippets/php/readable-filesize.htm）$Size = 0;$Dir = opendir（$DirectoryPath）;if （！$Dir）return -1;while （（$File = readdir（$Dir）） ！== false） {// Skip file pointersif （$File[0] == "."） continue; // Go recursive down, or add the file sizeif （is_dir（$DirectoryPath . $File））$Size += CalcDirectorySize（$DirectoryPath . $File . DIRECTORY_SEPARATOR）;else $Size += filesize（$DirectoryPath . $File）;}closedir（$Dir）;return $Size;}//使用范例：$SizeInBytes = CalcDirectorySize（"data/"）;